Java Character codePointAt() method

This Method has 3 types of syntax.

Java Character codePointAt(char[] a, int index) method

The codePointAt() method of Character class is used to return the code point at the given index of char array. If at a particular index, the char value in the char array is in the high surrogate range, the following index is less than the index of char array and if the char value at a given index is in the low surrogate range then the codepoint corresponding to this pair is returned.

Syntax

Parameter

The above method requires two parameters:

The char array
The index to the char value in the array.

Return Value

The codePointAt() method returns the value of character at the index.

Example 1

public class CharactercodePointAtMethodExample1 {
	public static void main(String[] args) {
        String input = "This is the first program for the given method";
System.out.println("This is the first program for the given method :  ");
int index = 4;
System.out.println(input.codePointAt(index));
    }
}

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Output:

This is the first program for the given method :
32

Example 2

public class CharactercodePointAtMethodExample2 {
	public static void main(String[] args) {
		System.out.println();
		    String str = "javatpoint.com";
		System.out.println("Given String : " + str);

		// Codepoint at index 3.
		int obj1 = str.codePointAt(3);

		// Codepoint at index 7.
		int obj2 = str.codePointAt(7);

		// Prints the character at index1 in string
		System.out.println("Character Value = " + obj1);
		// Prints the character at index9 in string
		System.out.println("Character Value = " + obj2);
		
		  }
		}

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Output:

Given String : javatpoint.com
Character Value = 97
Character Value = 105

Example 3

public class CharactercodePointAtMethodExample3
{
public static void main(String[] args)
{
String str1 = "JAVA";
System.out.println("The first string is = " + str1);
// Codepoint at index 1
int result1  = str1.codePointAt(1);	System.out.println("Character(unicode point) = " + result1);
String str2 = "TPOINT";
System.out.println("The second string is = " + str2);

//Codepoint at index 2.
int result2  = str1.codePointAt(2);
System.out.println("Character(unicode point) = " + result2);
}
}

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Output:

The first string is = JAVA
Character(unicode point) = 65
The second string is = TPOINT
Character(unicode point) = 86

Example 4

import java.util.Scanner;

public class CharactercodePointAtMethodExample4 {
public static void main(String[] args) {
	// initialize a new CharSequence object
	String Sequencecs = "Java is a unique language.";
	// Ask the user to enter the integer.
	System.out.println("Java is a unique language.");
	System.out.print("Enter the desired index:");
	Scanner s1 = new Scanner(System.in);
	int index = s1.nextInt();
	CharSequence cs = null;
	int result = Character.codePointAt(cs, index);
	System.out.println("Result:  "+result);
	       }
}

Output:

Java is a unique language.
Enter the desired index: 8
Result:  97

Java Character codePointAt(char[] a, int index, int limit) method

The codePointAt(char[] a, int index, int limit) method of character class returns the code point at a given index of char array, where only element with index less than limit can be used. If at a particular index, the char value in the char array is in the high surrogate range, the following index is less than the limit. If the char value at a given index is in the low surrogate range, the code point corresponding to this pair is returned.

Syntax

Parameter

The above method requires three parameters:

The char array
The index to the char value in the array.
The limit is the index after the last element that can be used in the array.

Return Value

This method returns the Unicode point at the given index.

Example 5

public class CharactercodePointAtMethodExample5 {
	public static void main(String[] args) {
	char[] c1 = new char[] { 'h', 'e', 'l', 'l', 'o' };
	System.out.println("Hello");
	int index1  = 2, limit1 = 4;
	int res1 = Character.codePointAt(c1, index1, limit1);
	System.out.println("Unicode code point is : " + res1 );
	char[] c2 = new char[] { 'e', 'v', 'e', 'r', 'y','o', 'n', 'e', };
	System.out.println("Everyone");
	int index2  = 2, limit2 = 3;
	int res2 = Character.codePointAt(c1, index1, limit1);
	System.out.println("Unicode code point is : " + res2 );
	   }
	}

Test it Now

Output:

Hello
Unicode code point is : 108
Everyone
Unicode code point is : 108

Example 6

package tests;
public class CharactercodePointAtMethodExample6 {
public static void main(String[] args) {
	char[] ch = new char[] { '1', '2', '3', '4', '5' };
int index  = 1, limit = 4;
		int res = Character.codePointAt(ch, index, limit);
		System.out.println("The numbers are:  '1', '2', '3', '4', '5' ");
	System.out.println("Unicode code point is " + res );
	 }
}

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Output:

The numbers are:  '1', '2', '3', '4', '5' 
Unicode code point is 50

Example 7

package tests;
public class CharactercodePointAtMethodExample7 {
public static void main(String[] args) {
	System.out.println("Hello");
	char[] ch1 = new char[] { 'H', 'e', 'l', 'l', 'o' };
	int index1  = 2, limit1 = 3;
	int res1 = Character.codePointAt(ch1, index1, limit1);
	System.out.println("Unicode code point for Hello is " + res1 );
		
	System.out.println("The numbers are:  '1', '2', '3', '4', '5' ");
	char[] ch2 = new char[] { '1', '2', '3', '4', '5' };
	int index2  = 3, limit2 = 4;
	int res2 = Character.codePointAt(ch2, index2, limit2);
	System.out.println("Unicode code point for number is " + res1 );
		   }
}

Test it Now

Output:

Hello
Unicode code point for Hello is 108
The numbers are:  '1', '2', '3', '4', '5' 
Unicode code point for number is 108

Java Character codePointAt(CharSequence seq, int index) Method

The codePointAt(CharSequence seq, int index) method of Character class returns the code point at a particular index of the charSequence. If at a particular index, the char value in the charSequence is in the high surrogate range, the following index would be lesser than the length of the charSequence. On the other hand, if the char value in the charSequence is in the low surrogate range, the supplementary code point corresponding to the given surrogate pair is returned.

Syntax

Parameter

The above method requires two parameters:

A sequence of char values.
The index of the char values which is to be converted in seq.

Return Value

This method returns the Unicode code point at a particular index.

Example 8

public class CharactercodePointAtMethodExample8 {
  public static void main(String[] args) {
	  System.out.println("Java is secured");  
      CharSequence s= "Java";
      int index  = 3;
      int result = Character.codePointAt(s, index);
     System.out.println("The Unicode code point is " + result);
     
     }
}

Test it Now

Output:

Java is secured
The Unicode code point is 97

Example 9

public class CharactercodePointAtMethodExample9 {
	public static void main(String[] args) {
		System.out.println("Java is secured");
		//System.out.println("The Unicode code point for Java is " + res1);

	      CharSequence s= "Java";
	      int index1  = 2;
	      int res1 = Character.codePointAt(s,index1);
	    System.out.println("The Unicode code point for Java is " + res1);
	     
	      System.out.println("The numbers are:  '1', '2', '3', '4', '5' ");
	     // System.out.println( "The Unicode code point for number is " + res2 );
	      char[] ch = new char[] { '1', '2', '3', '4', '5' };
	       int index2 = 3;
	      int res2 = Character.codePointAt(ch, index2);
	      System.out.println( "The Unicode code point for number is " + res2 );	   
	     }
	}

Test it Now

Output:

Java is secured
The Unicode code point for Java is 118
The numbers are:  '1', '2', '3', '4', '5' 
The Unicode code point for number is 52

Example 10

public class CharactercodePointAtMethodExample10 {
	public static void main(String[] args) {
		System.out.println("Java is more portable");	
	      CharSequence s1= "Java";
	      int index1  = 2;
	      int res1 = Character.codePointAt(s1,index1);
	    System.out.println("The Unicode code point for Java is " + res1);
	     
	    System.out.println("Java is based on the concepts of OOPS.");
		
	      CharSequence s2= "Java";
	      int index2  = 1;
	      int res2 = Character.codePointAt(s2,index2);
	    System.out.println("The Unicode code point for Java is " + res1);	      
             }	
       }

Test it Now

Output:

Java is more portable
The Unicode code point for Java is 118
Java is based on the concepts of OOPS.
The Unicode code point for Java is 118

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