Last Updated : 06 Dec, 2018
The
java.lang.Character.isHighSurrogate()is a inbuilt method in java which determines if the given char value is a Unicode high-surrogate code unit (also known as leading-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.
Syntax:public static boolean isHighSurrogate(char ch)Parameters:
The function accepts a single mandatory parameter
chwhich specifies the value to be tested.
Return Value:The function returns a boolean value. The value returned is
Trueif the char value is between MIN_HIGH_SURROGATE and MAX_HIGH_SURROGATE inclusive,
Falseotherwise. Below programs illustrate the Character.isHighSurrogate() method:
Program 1: Java
// Java program to illustrate the
// Character.isHighSurrogate() method
import java.lang.*;
public class gfg {
public static void main(String[] args)
{
// create 2 char primitives c1, c2
char c1 = '\u0a4f', c2 = '\ud8b4';
// assign isHighSurrogate results of
// c1, c2 to boolean primitives bool1, bool2
boolean bool1 = Character.isHighSurrogate(c1);
System.out.println("c1 is a Unicode"+
"high-surrogate code unit ? " + bool1);
boolean bool2 = Character.isHighSurrogate(c2);
System.out.println("c2 is a Unicode"+
"high-surrogate code unit ? " + bool2);
}
}
Output:
c1 is a Unicodehigh-surrogate code unit ? false c2 is a Unicodehigh-surrogate code unit ? trueProgram 2: Java
// Java program to illustrate the
// Character.isHighSurrogate() method
import java.lang.*;
public class gfg {
public static void main(String[] args)
{
// create 2 char primitives c1, c2
char c1 = '\u0b9f', c2 = '\ud5d5';
// assign isHighSurrogate results of
// c1, c2 to boolean primitives bool1, bool2
boolean bool1 = Character.isHighSurrogate(c1);
System.out.println("c1 is a Unicode" +
"high-surrogate code unit ? " + bool1);
boolean bool2 = Character.isHighSurrogate(c2);
System.out.println("c2 is a Unicode" +
"high-surrogate code unit ? " + bool2);
}
}
Output:
c1 is a Unicodehigh-surrogate code unit ? false c2 is a Unicodehigh-surrogate code unit ? false
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