Its All Binary
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FRAME | NO FRAME | TREE

Package java.lang

Class java.lang.String

Examples for usage of all methods of 'java.lang.String' with console output of example code.

Methods

Please click on method from below list to go to code example for usage of that method. Click [↓ Imports] to get import statements used in examples. To read javadoc of methods, click on [⿺ Javadoc] for that method.

Method Examples

public char charAt(int arg0)

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Usage:
				
		String string = "Its All Binary";

		// Get first character of string
		char firstChar = string.charAt(0);
		System.out.println("firstChar = " + firstChar);

		// Get last character of string.
		char lastChar = string.charAt(string.length() - 1);
		System.out.println("lastChar = " + lastChar);

		// Non existing index char. Causes exception.
		char nonExistingChar = string.charAt(9999);
		System.out.println("nonExistingChar = " + nonExistingChar);

	
					
Output:
firstChar = I
lastChar = y
java.lang.StringIndexOutOfBoundsException: String index out of range: 9999
	at java.base/java.lang.StringLatin1.charAt(StringLatin1.java:47)
	at java.base/java.lang.String.charAt(String.java:693)
	at com.itsallbinary.javadocexamples.examples.java_lang.StringExamples.test_charAt(StringExamples.java:31)

Tag: Example for charAt method of class java.lang.String., String charAt function example with arguments int arg0, How to use charAt method of String?, Usage of String.charAt, String.charAt() examples

public java.util.stream.IntStream chars()

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Usage:
				
		String string = "Its All Binary";

		IntStream stringStream = string.chars();

		stringStream.forEach(i -> {
			char c = (char) i;
			System.out.println(i + " = " + c);
		});
	
					
Output:
73 = I
116 = t
115 = s
32 =  
65 = A
108 = l
108 = l
32 =  
66 = B
105 = i
110 = n
97 = a
114 = r
121 = y

Tag: Example for chars method of class java.lang.String., String chars function example , How to use chars method of String?, Usage of String.chars, String.chars() examples, Convert String.chars intStream int to char primitive

public int codePointAt(int index)

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UTF-16 character in below example is \uD801\uDC00 = 𐐀

Usage:
				
		// UTF-8 character
		String string = "Its All Binary";
		int code = string.codePointAt(4);
		char c = (char) code;
		System.out.println("Code = " + code + " char = " + c + " " + Character.toString(code));

		/*
		 * UTF-16 character. Java char primitive can store only 16 bits. So below single
		 * utf-16 character is represented as 2 characters of 16 bits each i.e. \uD801
		 * (higher surrogate) & \uDC00 (lower surrogate). So even though its single
		 * unicode character, it is counted as 2 char.
		 * 
		 * codePointAt(0) will verify that this is higher surrogate & next char is lower
		 * surrogate, so the code point returned in for for surrogate pair together &
		 * not just for first char or higher surrogate.
		 */
		String utf16_Char = "\uD801\uDC00";// Decimal 66560
		int utf16_code_0 = utf16_Char.codePointAt(0);
		System.out.println("Code = " + utf16_code_0 + " Is surrogate pair? = "
				+ Character.isSurrogatePair(utf16_Char.charAt(0), utf16_Char.charAt(1))
				+ " Verify code point using Character class = "
				+ Character.toCodePoint(utf16_Char.charAt(0), utf16_Char.charAt(1)));

		/*
		 * Java string Code points for all numbers, small & capital alphabet letters &
		 * some special characters. Code points for unicode characters from 48 till 122
		 */
		String letters = "0123456789:;<=>?@ABCDEFJHIJKLMNOPQRSTUVWXYZ[\\]^_`abcdefghijklmnopqrstuvwxyz";
		String output = "";
		for (int i = 0; i < letters.length(); i++) {
			output += "{" + letters.charAt(i) + "=" + letters.codePointAt(i) + "}";
		}
		System.out.println(output);

	
					
Output:
Code = 65 char = A A
Code = 66560 Is surrogate pair? = true Verify code point using Character class = 66560
{0=48}{1=49}{2=50}{3=51}{4=52}{5=53}{6=54}{7=55}{8=56}{9=57}{:=58}{;=59}{<=60}{==61}{>=62}{?=63}{@=64}{A=65}{B=66}{C=67}{D=68}{E=69}{F=70}{J=74}{H=72}{I=73}{J=74}{K=75}{L=76}{M=77}{N=78}{O=79}{P=80}{Q=81}{R=82}{S=83}{T=84}{U=85}{V=86}{W=87}{X=88}{Y=89}{Z=90}{[=91}{\=92}{]=93}{^=94}{_=95}{`=96}{a=97}{b=98}{c=99}{d=100}{e=101}{f=102}{g=103}{h=104}{i=105}{j=106}{k=107}{l=108}{m=109}{n=110}{o=111}{p=112}{q=113}{r=114}{s=115}{t=116}{u=117}{v=118}{w=119}{x=120}{y=121}{z=122}

Tag: Example for codePointAt method of class java.lang.String., String codePointAt function example with arguments int index, How to use codePointAt method of String?, Usage of String.codePointAt, String.codePointAt() examples, Calculate code point for surrogate pair in java String., Convert String or char to int code points., Get unicode decimal code point for english alphabets & alphanumerics & special symbols

public int codePointBefore(int index)

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UTF-16 character in below example is \uD801\uDC00 = 𐐀

Usage:
				
		// UTF-8 character
		String string = "Its All Binary";
		int code = string.codePointBefore(9);
		char c = (char) code;
		System.out.println("Code = " + code + " char = " + c + " " + Character.toString(code));

		/*
		 * UTF-16 character. Java char primitive can store only 16 bits. So below single
		 * utf-16 character is represented as 2 characters of 16 bits each i.e. \uD801
		 * (higher surrogate) & \uDC00 (lower surrogate). So even though its single
		 * unicode character, it is counted as 2 char.
		 * 
		 * codePointBefore(2) which is code point at 1 (lower surrogate) will verify
		 * that this is lower surrogate & previous char is higher surrogate, so the code
		 * point returned in for for surrogate pair together & not just for first char
		 * or lower surrogate.
		 */
		String utf16_Char = "\uD801\uDC00A";// Decimal 66560 & then character A
		int utf16_code_0 = utf16_Char.codePointBefore(2);
		System.out.println("Code = " + utf16_code_0 + " Is surrogate pair? = "
				+ Character.isSurrogatePair(utf16_Char.charAt(0), utf16_Char.charAt(1))
				+ " Verify code point using Character class = "
				+ Character.toCodePoint(utf16_Char.charAt(0), utf16_Char.charAt(1)));

		/*
		 * Java string Code points for all numbers, small & capital alphabet letters &
		 * some special characters. Code points for unicode characters from 48 till 122
		 */
		String letters = "0123456789:;<=>?@ABCDEFJHIJKLMNOPQRSTUVWXYZ[\\]^_`abcdefghijklmnopqrstuvwxyz{";
		String output = "";
		for (int i = 1; i < letters.length(); i++) {
			output += "{" + letters.charAt(i - 1) + "=" + letters.codePointBefore(i) + "}";
		}
		System.out.println(output);
	
					
Output:
Code = 66 char = B B
Code = 66560 Is surrogate pair? = true Verify code point using Character class = 66560
{0=48}{1=49}{2=50}{3=51}{4=52}{5=53}{6=54}{7=55}{8=56}{9=57}{:=58}{;=59}{<=60}{==61}{>=62}{?=63}{@=64}{A=65}{B=66}{C=67}{D=68}{E=69}{F=70}{J=74}{H=72}{I=73}{J=74}{K=75}{L=76}{M=77}{N=78}{O=79}{P=80}{Q=81}{R=82}{S=83}{T=84}{U=85}{V=86}{W=87}{X=88}{Y=89}{Z=90}{[=91}{\=92}{]=93}{^=94}{_=95}{`=96}{a=97}{b=98}{c=99}{d=100}{e=101}{f=102}{g=103}{h=104}{i=105}{j=106}{k=107}{l=108}{m=109}{n=110}{o=111}{p=112}{q=113}{r=114}{s=115}{t=116}{u=117}{v=118}{w=119}{x=120}{y=121}{z=122}

Tag: Example for codePointBefore method of class java.lang.String., String codePointBefore function example with arguments int index, How to use codePointBefore method of String?, Usage of String.codePointBefore, String.codePointBefore() examples, Calculate code point for surrogate pair in java String., Convert String or char to int code points., Get unicode decimal code point for english alphabets & alphanumerics & special symbols

public int codePointCount(int arg0, int arg1)

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Usage:
				
		// UTF-8 character
		String string = "Its All Binary";
		int codeCount = string.codePointCount(0, string.length());
		System.out.println("Length = " + string.length() + " CodeCount = " + codeCount);

		/*
		 * UTF-16 character. Java char primitive can store only 16 bits. So below single
		 * utf-16 character is represented as 2 characters of 16 bits each i.e. \uD801
		 * (higher surrogate) & \uDC00 (lower surrogate). So even though its single
		 * unicode character, it is counted as 2 char.
		 */
		String utf16_Char = "\uD801\uDC00";// Decimal 66560
		int utf16_code_Count = utf16_Char.codePointCount(0, utf16_Char.length());
		System.out.println("Length = " + utf16_Char.length() + " CodeCount = " + utf16_code_Count);

	
					
Output:
Length = 14 CodeCount = 14
Length = 2 CodeCount = 1

Tag: Example for codePointCount method of class java.lang.String., String codePointCount function example with arguments int arg0, int arg1, How to use codePointCount method of String?, Usage of String.codePointCount, String.codePointCount() examples

public java.util.stream.IntStream codePoints()

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Usage:
				
		String string = "Its All Binary";
		string.codePoints().forEach(i -> System.out.println("Code Point = " + i + " char = " + ((char) i)));

		/*
		 * Java string Code points for all numbers, small & capital alphabet letters &
		 * some special characters. Code points for unicode characters from 48 till 122.
		 */
		String letters = "0123456789:;<=>?@ABCDEFJHIJKLMNOPQRSTUVWXYZ[\\]^_`abcdefghijklmnopqrstuvwxyz";
		String output = letters.codePoints().mapToObj(i -> "{" + (char) i + "," + i + "}")
				.collect(Collectors.joining(","));
		System.out.println(output);

	
					
Output:
Code Point = 73 char = I
Code Point = 116 char = t
Code Point = 115 char = s
Code Point = 32 char =  
Code Point = 65 char = A
Code Point = 108 char = l
Code Point = 108 char = l
Code Point = 32 char =  
Code Point = 66 char = B
Code Point = 105 char = i
Code Point = 110 char = n
Code Point = 97 char = a
Code Point = 114 char = r
Code Point = 121 char = y
{0,48},{1,49},{2,50},{3,51},{4,52},{5,53},{6,54},{7,55},{8,56},{9,57},{:,58},{;,59},{<,60},{=,61},{>,62},{?,63},{@,64},{A,65},{B,66},{C,67},{D,68},{E,69},{F,70},{J,74},{H,72},{I,73},{J,74},{K,75},{L,76},{M,77},{N,78},{O,79},{P,80},{Q,81},{R,82},{S,83},{T,84},{U,85},{V,86},{W,87},{X,88},{Y,89},{Z,90},{[,91},{\,92},{],93},{^,94},{_,95},{`,96},{a,97},{b,98},{c,99},{d,100},{e,101},{f,102},{g,103},{h,104},{i,105},{j,106},{k,107},{l,108},{m,109},{n,110},{o,111},{p,112},{q,113},{r,114},{s,115},{t,116},{u,117},{v,118},{w,119},{x,120},{y,121},{z,122}

Tag: Example for codePoints method of class java.lang.String., String codePoints function example , How to use codePoints method of String?, Usage of String.codePoints, String.codePoints() examples, Convert String or char to int code points., Get unicode decimal code point for english alphabets & alphanumerics & special symbols

public int compareTo(java.lang.String arg0)

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Usage:
				
		String text = "AD";
		String sametext = "AD";
		String sametextSmallCase = "ad";
		String text_lexicographically_Previous = "AA";
		String text_lexicographically_After = "AE";
		String text_lexicographically_Similar_but_4CharLonger = "ADAAAA";

		// 0 = text is equal, positive = text is greater, negative = text is lesser

		// Both are equal so gives 0
		System.out.println(text + " compareTo " + sametext + " = " + text.compareTo(sametext));
		// compareTo is case sensitive. For case insensitive use compareToIgnoreCase()
		System.out.println(text + " compareTo " + sametextSmallCase + " = " + text.compareTo(sametextSmallCase));
		// Both are not equal but other String lexicographically falls before text
		// string in sorting order. So text is greater.
		System.out.println(text + " compareTo " + text_lexicographically_Previous + " = "
				+ text.compareTo(text_lexicographically_Previous));
		// Both are not equal but other String lexicographically falls after text
		// string in sorting order. So text is lesser.
		System.out.println(text + " compareTo " + text_lexicographically_After + " = "
				+ text.compareTo(text_lexicographically_After));
		// Both string have similar first to char but other string has 4 extra
		// character. This will compare & return difference in lengths.
		System.out.println(text + " compareTo " + text_lexicographically_Similar_but_4CharLonger + " = "
				+ text.compareTo(text_lexicographically_Similar_but_4CharLonger));

		// Use String.compare to sort list of strings like names using lambda & streams.
		String sortedNames = Arrays.asList("Josh", "John", "Ravi", "James", "Amber", "Zoey", "Amy").stream()
				.sorted((a, b) -> a.compareTo(b)).collect(Collectors.joining(","));
		System.out.println("Sorted names using compare = " + sortedNames);

		// compareTo null. Not null safe so causes NullPointerException. Make sure to do
		// null checks.
		text.compareTo(null);

	
					
Output:
AD compareTo AD = 0
AD compareTo ad = -32
AD compareTo AA = 3
AD compareTo AE = -1
AD compareTo ADAAAA = -4
Sorted names using compare = Amber,Amy,James,John,Josh,Ravi,Zoey
java.lang.NullPointerException
	at java.base/java.lang.String.compareTo(String.java:1196)
	at com.itsallbinary.javadocexamples.examples.java_lang.StringExamples.test_compareTo_String(StringExamples.java:204)

Tag: Example for compareTo method of class java.lang.String., String compareTo function example with arguments java.lang.String arg0, How to use compareTo method of String?, Usage of String.compareTo, String.compareTo() examples

public int compareToIgnoreCase(java.lang.String arg0)

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Usage:
				

		String text = "AD";
		String sametext = "AD";
		String sametextSmallCase = "ad";
		String text_lexicographically_Previous = "aA";
		String text_lexicographically_After = "Ae";
		String text_lexicographically_Similar_but_4CharLonger = "AdAAAA";

		// 0 = text is equal, positive = text is greater, negative = text is lesser

		// Both are equal so gives 0
		System.out.println(text + " compareToIgnoreCase " + sametext + " = " + text.compareToIgnoreCase(sametext));
		// compareToIgnoreCase is case insensitive
		System.out.println(text + " compareToIgnoreCase " + sametextSmallCase + " = "
				+ text.compareToIgnoreCase(sametextSmallCase));
		// Both are not equal but other String lexicographically falls before text
		// string in sorting order. So text is greater.
		System.out.println(text + " compareToIgnoreCase " + text_lexicographically_Previous + " = "
				+ text.compareToIgnoreCase(text_lexicographically_Previous));
		// Both are not equal but other String lexicographically falls after text
		// string in sorting order. So text is lesser.
		System.out.println(text + " compareToIgnoreCase " + text_lexicographically_After + " = "
				+ text.compareToIgnoreCase(text_lexicographically_After));
		// Both string have similar first to char but other string has 4 extra
		// character. This will compare & return difference in lengths.
		System.out.println(text + " compareToIgnoreCase " + text_lexicographically_Similar_but_4CharLonger + " = "
				+ text.compareToIgnoreCase(text_lexicographically_Similar_but_4CharLonger));

		// compareToIgnoreCase null. Not null safe so causes NullPointerException. Make
		// sure to do null checks.
		text.compareToIgnoreCase(null);

	
					
Output:
AD compareToIgnoreCase AD = 0
AD compareToIgnoreCase ad = 0
AD compareToIgnoreCase aA = 3
AD compareToIgnoreCase Ae = -1
AD compareToIgnoreCase AdAAAA = -4
java.lang.NullPointerException
	at java.base/java.lang.String$CaseInsensitiveComparator.compare(String.java:1225)
	at java.base/java.lang.String$CaseInsensitiveComparator.compare(String.java:1218)
	at java.base/java.lang.String.compareToIgnoreCase(String.java:1258)
	at com.itsallbinary.javadocexamples.examples.java_lang.StringExamples.test_compareToIgnoreCase(StringExamples.java:241)

Tag: Example for compareToIgnoreCase method of class java.lang.String., String compareToIgnoreCase function example with arguments java.lang.String arg0, How to use compareToIgnoreCase method of String?, Usage of String.compareToIgnoreCase, String.compareToIgnoreCase() examples

public java.lang.String concat(java.lang.String arg0)

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Usage:
				
		String itsAll = "Its All";
		String binary = " Binary";
		String fun = "Fun";

		System.out.println(itsAll.concat(binary));
		// Chaining string concat method. Will create multiple intermidiate string
		// objects so might not be good for performance.
		System.out.println(itsAll.concat(binary).concat(" ").concat(fun).concat("!"));

		// If concat with empty string, then same string object returned back.
		String concatItsAll = itsAll.concat("");
		System.out.println("concatItsAll == itsAll  --> " + (concatItsAll == itsAll));

		// Concat null. Not null safe so causes NullPointerException. Make
		// sure to do null checks.
		System.out.println(itsAll.concat(null));
	
					
Output:
Its All Binary
Its All Binary Fun!
concatItsAll == itsAll  --> true
java.lang.NullPointerException
	at java.base/java.lang.String.concat(String.java:1937)
	at com.itsallbinary.javadocexamples.examples.java_lang.StringExamples.test_concat(StringExamples.java:262)

Tag: Example for concat method of class java.lang.String., String concat function example with arguments java.lang.String arg0, How to use concat method of String?, Usage of String.concat, String.concat() examples

public boolean contains(java.lang.CharSequence otherString)

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Usage:
				
		String string = "Its All Binary";

		// Contains binray, should give true
		boolean containsBinary = string.contains("Binary");
		System.out.println("containsBinary = " + containsBinary);

		// Contains XYZ. Should give false.
		boolean containsXYZ = string.contains("XYZ");
		System.out.println("containsXYZ = " + containsXYZ);

		// Contains with empty string. Gives true.
		boolean containsEmptyString = string.contains("");
		System.out.println("containsEmptyString = " + containsEmptyString);

		// Contains check of String to StringBuffer. StringBuffer is also CharSequence.
		StringBuffer bufferBinary = new StringBuffer("Binary");
		boolean containsBinaryBuf = string.contains(bufferBinary);
		System.out.println("containsBinaryBuf = " + containsBinaryBuf);

		// Contains check of String to StringBuilder. StringBuilder is also
		// CharSequence.
		StringBuilder builderBinary = new StringBuilder("Binary");
		boolean containsBinaryBuild = string.contains(builderBinary);
		System.out.println("containsBinaryBuild = " + containsBinaryBuild);

		// contains null. Not null safe so causes NullPointerException. Make
		// sure to do null checks.
		string.contains(null);

	
					
Output:
containsBinary = true
containsXYZ = false
containsEmptyString = true
containsBinaryBuf = true
containsBinaryBuild = true
java.lang.NullPointerException
	at java.base/java.lang.String.contains(String.java:2036)
	at com.itsallbinary.javadocexamples.examples.java_lang.StringExamples.test_contains(StringExamples.java:295)

Tag: Example for contains method of class java.lang.String., String contains function example with arguments java.lang.CharSequence otherString, How to use contains method of String?, Usage of String.contains, String.contains() examples

public boolean contentEquals(java.lang.StringBuffer sb)

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Usage:
				
		String string = "Its All Binary";

		// equals() works only for String. So use contentEquals to check String equality
		// against StringBuffer
		StringBuffer sameStringBuf = new StringBuffer("Its All Binary");
		boolean isContentBufEquals = string.contentEquals(sameStringBuf);
		System.out.println("isContentBufEquals = " + isContentBufEquals);

		// Not null safe so causes NullPointerException. Make
		// sure to do null checks.
		string.contentEquals(null);
	
					
Output:
isContentBufEquals = true
java.lang.NullPointerException
	at java.base/java.lang.String.contentEquals(String.java:1096)
	at java.base/java.lang.String.contentEquals(String.java:1035)
	at com.itsallbinary.javadocexamples.examples.java_lang.StringExamples.test_contentEquals_StringBuffer(StringExamples.java:313)

Tag: Example for contentEquals method of class java.lang.String., String contentEquals function example with arguments java.lang.StringBuffer sb, How to use contentEquals method of String?, Usage of String.contentEquals, String.contentEquals() examples, String equals StringBuffer, Check equality of String and StringBuffer

public boolean contentEquals(java.lang.CharSequence cs)

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Usage:
				
		String string = "Its All Binary";

		String sameString = "Its All Binary";
		boolean isContentEquals = string.contentEquals(sameString);
		System.out.println("isContentEquals = " + isContentEquals);

		// equals() works only for String. So use contentEquals to check String equality
		// against StringBuffer
		StringBuffer sameStringBuf = new StringBuffer("Its All Binary");
		boolean isContentBufEquals = string.contentEquals(sameStringBuf);
		System.out.println("isContentBufEquals = " + isContentBufEquals);

		// equals() works only for String. So use contentEquals to check String equality
		// against StringBuilder
		StringBuilder sameStringBldr = new StringBuilder("Its All Binary");
		boolean isContentBldrEquals = string.contentEquals(sameStringBldr);
		System.out.println("isContentBldrEquals = " + isContentBldrEquals);

		// Not null safe so causes NullPointerException. Make
		// sure to do null checks.
		string.contentEquals(null);
	
					
Output:
isContentEquals = true
isContentBufEquals = true
isContentBldrEquals = true
java.lang.NullPointerException
	at java.base/java.lang.String.contentEquals(String.java:1096)
	at java.base/java.lang.String.contentEquals(String.java:1035)
	at com.itsallbinary.javadocexamples.examples.java_lang.StringExamples.test_contentEquals_CharSequence(StringExamples.java:341)

Tag: Example for contentEquals method of class java.lang.String., String contentEquals function example with arguments java.lang.CharSequence cs, How to use contentEquals method of String?, Usage of String.contentEquals, String.contentEquals() examples, String equals StringBuffer, String equals StringBuilder, Check equality of String and StringBuffer or StringBuilder

public static java.lang.String copyValueOf(char[] data, int offset, int count)

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Usage:
				
		char[] chars = { 'I', 't', 's', ' ', 'A', 'l', 'l', ' ', 'B', 'i', 'n', 'a', 'r', 'y' };

		// Create string of character starting at index 0 i.e. 'I'. Then count 3
		// characters after that which is till 's'
		String its = String.copyValueOf(chars, 0, 3);
		System.out.println(its);

		// Create string of character starting at index 4 i.e. 'A'. Then count 3
		// characters after that which is till last 'l'.
		String all = String.copyValueOf(chars, 4, 3);
		System.out.println(all);

		// Create string of character starting at index 8 i.e. 'B'. Then count 6
		// characters after that which is till end.
		String binary = String.copyValueOf(chars, 8, 6);
		System.out.println(binary);

		// Give count that goes beyond string length. Causes exception.
		String.copyValueOf(chars, 8, 6);
	
					
Output:
Its
All
Binary

Tag: Example for copyValueOf method of class java.lang.String., String copyValueOf function example with arguments char[] data, int offset, int count, How to use copyValueOf method of String?, Usage of String.copyValueOf, String.copyValueOf() examples

public static java.lang.String copyValueOf(char[] data)

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Usage:
				
		char[] chars = { 'I', 't', 's', ' ', 'A', 'l', 'l', ' ', 'B', 'i', 'n', 'a', 'r', 'y' };
		String string = String.copyValueOf(chars);
		System.out.println(string);

		// Try empty character array. Creates empty string object.
		char[] emptyCharsArray = {};
		String empty = String.copyValueOf(emptyCharsArray);
		System.out.println("Empty char array to string ='" + empty + "'" + " equals empty = " + "".equals(empty));

		// Try null character array. Causes exception.
		char[] nullCharsArray = null;
		String nullString = String.copyValueOf(nullCharsArray);
		System.out.println("Null char array to string ='" + nullString + "'");
	
					
Output:
Its All Binary
Empty char array to string ='' equals empty = true
java.lang.NullPointerException
	at java.base/java.lang.String.<init>(String.java:251)
	at java.base/java.lang.String.copyValueOf(String.java:3017)
	at com.itsallbinary.javadocexamples.examples.java_lang.StringExamples.test_copyValueOf_charArray(StringExamples.java:381)

Tag: Example for copyValueOf method of class java.lang.String., String copyValueOf function example with arguments char[] data, How to use copyValueOf method of String?, Usage of String.copyValueOf, String.copyValueOf() examples

public boolean endsWith(java.lang.String suffix)

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Loading...
Usage:
				
		String string = "Its All Binary";

		boolean endsWithY = string.endsWith("y");
		System.out.println("endsWithY = " + endsWithY);

		boolean endsWithAry = string.endsWith("ary");
		System.out.println("endsWithAry = " + endsWithAry);

		boolean endsWithItsAllBinary = string.endsWith("Its All Binary");
		System.out.println("endsWithItsAllBinary = " + endsWithItsAllBinary);

		boolean endsWithAll = string.endsWith("All");
		System.out.println("endsWithAll = " + endsWithAll);
	
					
Output:
endsWithY = true
endsWithAry = true
endsWithItsAllBinary = true
endsWithAll = false

Tag: Example for endsWith method of class java.lang.String., String endsWith function example with arguments java.lang.String suffix, How to use endsWith method of String?, Usage of String.endsWith, String.endsWith() examples

public boolean equals(java.lang.Object anObject)

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Usage:
				
		String string = "Its All Binary";

		// equals is symmetric
		System.out.println("string.equals(\"Its All Binary\") = " + string.equals("Its All Binary"));
		System.out.println("\"Its All Binary\".equals(string) = " + "Its All Binary".equals(string));

		System.out.println("string.equals(\"Binary\") = " + string.equals("Binary"));
		System.out.println("string.equals(\"XYZ\") = " + string.equals("XYZ"));
		System.out.println("string.equals(\"\") = " + string.equals(""));

		// String equals is null safe. In case of null returns false.
		System.out.println("string.equals(null) = " + string.equals(null));

		// String equals does not work with StringBuffer or StringBuilder even if
		// content is exactly same. Use contentEquals() instead.
		StringBuffer sameStringBuf = new StringBuffer("Its All Binary");
		System.out.println("string.equals(sameStringBuf) = " + string.equals(sameStringBuf));

		StringBuilder sameStringBldr = new StringBuilder("Its All Binary");
		System.out.println("string.equals(sameStringBldr) = " + string.equals(sameStringBldr));
	
					
Output:
string.equals("Its All Binary") = true
"Its All Binary".equals(string) = true
string.equals("Binary") = false
string.equals("XYZ") = false
string.equals("") = false
string.equals(null) = false
string.equals(sameStringBuf) = false
string.equals(sameStringBldr) = false

Tag: Example for equals method of class java.lang.String., String equals function example with arguments java.lang.Object anObject, How to use equals method of String?, Usage of String.equals, String.equals() examples

public boolean equalsIgnoreCase(java.lang.String other)

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Loading...
Usage:
				
		String string = "Its All Binary";

		// equalsIgnoreCase is symmetric
		System.out
				.println("string.equalsIgnoreCase(\"ITS all biNArY\") = " + string.equalsIgnoreCase("ITS all biNArY"));
		System.out
				.println("\"ITS all biNArY\".equalsIgnoreCase(string) = " + "ITS all biNArY".equalsIgnoreCase(string));

		System.out.println("string.equalsIgnoreCase(\"Binary\") = " + string.equalsIgnoreCase("Binary"));
		System.out.println("string.equalsIgnoreCase(\"XYZ\") = " + string.equalsIgnoreCase("XYZ"));
		System.out.println("string.equalsIgnoreCase(\"\") = " + string.equalsIgnoreCase(""));

		// String equalsIgnoreCase is null safe. In case of null returns false.
		System.out.println("string.equalsIgnoreCase(null) = " + string.equalsIgnoreCase(null));

		// String equalsIgnoreCase does not work with StringBuffer or StringBuilder as
		// method argument is of type String.

	
					
Output:
string.equalsIgnoreCase("ITS all biNArY") = true
"ITS all biNArY".equalsIgnoreCase(string) = true
string.equalsIgnoreCase("Binary") = false
string.equalsIgnoreCase("XYZ") = false
string.equalsIgnoreCase("") = false
string.equalsIgnoreCase(null) = false

Tag: Example for equalsIgnoreCase method of class java.lang.String., String equalsIgnoreCase function example with arguments java.lang.String other, How to use equalsIgnoreCase method of String?, Usage of String.equalsIgnoreCase, String.equalsIgnoreCase() examples

public static transient java.lang.String format(java.lang.String format, java.lang.Object[] args)

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Usage:
				
		/*
		 * String format with argument index format.
		 * 
		 * Format %1$s means '%'<1st argument>'$'<String type>
		 */
		String string = String.format("Its %1$s %2$s", "All", "Binary");
		System.out.println(string);

		// Reuse format. Use string %s & digit %d format.
		String format = "Hello %s, price of product is USD%d";
		System.out.println(String.format(format, "James", 100));
		System.out.println(String.format(format, "Ravi", 200));

		/*
		 * String format with LocalDate
		 * 
		 * Format %1$tm means '%'<1st argument><month>
		 */
		String today = String.format("Today's date is : %1$tm / %1$te / %1$tY", LocalDate.now());
		System.out.println(today);

		// String format with width zero filling
		String zeroFilledDigits = String.format("%d%05d", 1, 9);
		System.out.println(zeroFilledDigits);

		// Console Tabular format using String format width strings & system out
		String tabelFormatWithWidth = "|%4s |%8s |%12s |";
		String header = String.format(tabelFormatWithWidth, "Id", "Name", "Department", "Salary");
		System.out.println(header);
		String row1 = String.format(tabelFormatWithWidth, "1", "James", "IT", "80000");
		System.out.println(row1);

		// String format date with width
		String dateWithWidth = String.format("%1$10tm %1$20te %1$40tY", LocalDate.now());
		System.out.println("Today = " + dateWithWidth);

		// Wrong format. Causes exception.
		String.format("%T", "Hi");
	
					
Output:
Its All Binary
Hello James, price of product is USD100
Hello Ravi, price of product is USD200
Today's date is : 07 / 8 / 2019
100009
|  Id |    Name |  Department |
|   1 |   James |          IT |
Today =         07                    8                                     2019
java.util.UnknownFormatConversionException: Conversion = 'T'
	at java.base/java.util.Formatter$FormatSpecifier.conversion(Formatter.java:2839)
	at java.base/java.util.Formatter$FormatSpecifier.<init>(Formatter.java:2865)
	at java.base/java.util.Formatter.parse(Formatter.java:2713)
	at java.base/java.util.Formatter.format(Formatter.java:2655)
	at java.base/java.util.Formatter.format(Formatter.java:2609)
	at java.base/java.lang.String.format(String.java:2897)
	at com.itsallbinary.javadocexamples.examples.java_lang.StringExamples.test_format_String_ObjectArray(StringExamples.java:489)

Tag: Example for format method of class java.lang.String., String format function example with arguments java.lang.String format, java.lang.Object[] args, How to use format method of String?, Usage of String.format, String.format() examples

Imports

[↑ Method List]

Import statements used in examples.

				java.util.Arrays
java.util.Locale
java.util.stream.Collectors
java.util.stream.IntStream
java.nio.charset.Charset
java.time.LocalDate
		

Tag: Simple working examples of methods / functions of class java.lang.String along with their console output, java.lang.String tutorial., Guide to java.lang.String & its methods., Understanding java.lang.String with examples.