Character.isWhitespace() method in Java with examples Last Updated : 06 Dec, 2018 Comments Improve Suggest changes Like Article Like Report The java.lang.Character.isWhitespace() is an inbuilt method in a java that determines if the specified character (Unicode code point) is white space according to Java. A character is a Java whitespace character if and only if it satisfies one of the following criteria: It is a Unicode space character (SPACE_SEPARATOR, LINE_SEPARATOR, or PARAGRAPH_SEPARATOR) but is not also a non-breaking space ('\u00A0', '\u2007', '\u202F'). It is '\t', U+0009 HORIZONTAL TABULATION. It is '\n', U+000A LINE FEED. It is '\u000B', U+000B VERTICAL TABULATION. It is '\f', U+000C FORM FEED. It is '\r', U+000D CARRIAGE RETURN. It is '\u001C', U+001C FILE SEPARATOR. It is '\u001D', U+001D GROUP SEPARATOR. It is '\u001E', U+001E RECORD SEPARATOR. It is '\u001F', U+001F UNIT SEPARATOR. Syntax: public static boolean isWhitespace(datatype character) Parameters: The function accepts one mandatory parameter character. This parameter can be of datatype int or char. It specifies the character to be tested. Return value: This method returns true if the character is a Java whitespace character, false otherwise. Below programs illustrate the Character.isWhitespace(char ch) method: Program 1: Java // Java program to illustrate the Character.isWhitespace() // method when the passed parameter is a character import java.lang.*; public class gfg { public static void main(String[] args) { // create 2 char primitives c1, c2 char c1 = '*', c2 = '\f'; boolean b1 = Character.isWhitespace(c1); boolean b2 = Character.isWhitespace(c2); String str1 = "c1 is a Java whitespace character is " + b1; String str2 = "c2 is a Java whitespace character is " + b2; // print b1, b2 values System.out.println(str1); System.out.println(str2); } } Output: c1 is a Java whitespace character is false c2 is a Java whitespace character is true Program 2: Java // Java program to demonstrate the Character.isWhitespace() // method when the passed parameter is a character import java.lang.*; public class gfg { public static void main(String[] args) { // create 2 char primitives c1, c2 char c1 = '/', c2 = '\f'; boolean b1 = Character.isWhitespace(c1); boolean b2 = Character.isWhitespace(c2); String str1 = "c1 is a Java whitespace character is " + b1; String str2 = "c2 is a Java whitespace character is " + b2; // print b1, b2 values System.out.println(str1); System.out.println(str2); } } Output: c1 is a Java whitespace character is false c2 is a Java whitespace character is true Program 3: When the parameter is of type int. Java // Java program to demonstrate the // Character.isWhitespace() // method when the passed parameter // is a character import java.lang.*; public class gfg { public static void main(String[] args) { // create 2 int primitives c1, c2 int c1 = 0x451c, c2 = 0x4abc; boolean b1 = Character.isWhitespace(c1); boolean b2 = Character.isWhitespace(c2); String str1 = "c1 represents Java whitespace character is " + b1; String str2 = "c2 represents Java whitespace character is " + b2; // print b1, b2 values System.out.println(str1); System.out.println(str2); } } Output: c1 represents Java whitespace character is false c2 represents Java whitespace character is false Program 4: When the parameter is of type int. Java // Java program to demonstrate the Character.isWhitespace() // method when the passed parameter is a character import java.lang.*; public class gfg { public static void main(String[] args) { // create 2 int primitives c1, c2 int c1 = 0x001c, c2 = 0x1bbc; boolean b1 = Character.isWhitespace(c1); boolean b2 = Character.isWhitespace(c2); String str1 = "c1 represents Java whitespace character is " + b1; String str2 = "c2 represents Java whitespace character is " + b2; // print b1, b2 values System.out.println(str1); System.out.println(str2); } } Output: c1 represents Java whitespace character is true c2 represents Java whitespace character is false Comment More infoAdvertise with us Next Article Character.isWhitespace() method in Java with examples T Twinkl Bajaj Follow Improve Article Tags : Misc Java Java-lang package Java-Functions Java-Character +1 More Practice Tags : JavaMisc Similar Reads Java Tutorial Java is a high-level, object-oriented programming language used to build web apps, mobile applications, and enterprise software systems. 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