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Java.lang.Character.isLowSurrogate() Method
Description
The java.lang.Character.isLowSurrogate(char ch) determines if the given char value is a Unicode low-surrogate code unit (also known as trailing-surrogate code unit).
Such values do not represent characters by themselves, but are used in the representation of supplementary characters in the UTF-16 encoding.
Declaration
Following is the declaration for java.lang.Character.isLowSurrogate() method
public static boolean isLowSurrogate(char ch)
Parameters
ch − the char value to be tested
Return Value
This method returns true if the char value is between MIN_LOW_SURROGATE and MAX_LOW_SURROGATE inclusive, false otherwise.
Exception
NA
Example
The following example shows the usage of lang.Character.isLowSurrogate() method.
package com.tutorialspoint; import java.lang.*; public class CharacterDemo { public static void main(String[] args) { // create 2 char primitives ch1, ch2 char ch1, ch2; // assign values to ch1, ch2 ch1 = '\udc28'; ch2 = 'a'; // create 2 boolean primitives b1, b2 boolean b1, b2; /** * check if ch1, ch2 are Unicode low-surrogate code units * and assign results to b1, b2 */ b1 = Character.isLowSurrogate(ch1); b2 = Character.isLowSurrogate(ch2); String str1 = "ch1 is a Unicode low-surrogate is " + b1; String str2 = ch2 + " is a Unicode low-surrogate is " + b2; // print b1, b2 values System.out.println( str1 ); System.out.println( str2 ); } }
Let us compile and run the above program, this will produce the following result −
ch1 is a Unicode low-surrogate is true a is a Unicode low-surrogate is false
java_lang_character.htm
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