Java Character isISOControl() Method

The isISOControl(int codePoint) method of Character class generally determines whether the referenced character is an ISO control character or not.

A character can be consider as ISO control character if the given character's code lies in the range of '\u000' through '\u001F' or in the range of '\u007F' through '\u009F'.

Syntax

Parameters

codePoint: It is the codePoint which is the character that needs to be tested.

Return Value

The isISOControl(int codePoint) method returns a boolean value i.e. true, if the given(or specified) character is an ISO control character. Otherwise, the method returns false

Example 1

public class JavaCharacterisISOControlExample_1 {
public static void main(String args[]){
	// Initialize three codepoints.
	   int codepoint1 = 28;
	   int codepoint2 = 13480;
	   int codepoint3 = 13542;
	// Check whether the codepoints are isISOControl character or not.
	   boolean check1 = Character.isISOControl(codepoint1);
	   boolean check2 = Character.isISOControl(codepoint2);
	   boolean check3 = Character.isISOControl(codepoint3);
	// Print the result.
	
System.err.print("The first codepoint \'"+codepoint1+"\' is an ISO Control: "+check1+ "\n");
System.err.print("The second codepoint \'"+codepoint2+"\' is an ISO Control: "+check2+"\n");	
System.err.print("The third codepoint \'"+codepoint3+"\' is  an ISO Control: "+check3+"\n");		
   }
}

Test it Now

Output:

The first codepoint '28' is an ISO Control: true
The second codepoint '13480' is an ISO Control: false
The third codepoint '13542' is  an ISO Control: false

Example 2

import java.util.Scanner;
public class JavaCharacterisISOControlExample_2 {
    public static void main(String[] args) {
    // Ask for user input
       System.out.print("Enter the first input:");
    // Use the Scanner class to get the user input
       Scanner s1 = new Scanner(System.in);
    // Gets the user input
       char[] value1 = s1.nextLine().toCharArray();
    // Check whether the user input is an ISO control character or not
       for (char ch1 : value1) {
boolean result1 = Character.isISOControl(ch1);
    // print the result
if(result1){
System.out.println("The character " + ch1 + " is an ISO control character: ");				
}
else{
System.out.println("The character " + ch1 + " is not an ISO control character:");
           }		
System.out.print("Enter the second input:");
       Scanner s2 = new Scanner(System.in);
       char[] value2 = s2.nextLine().toCharArray();
       for (char ch2 : value2) {
boolean result2 = Character.isISOControl(ch2);
if(result2){
System.out.println("The character " + ch2 + " is an ISO control character: ");				
}
else{
System.out.println("The character " + ch2 + " is not an ISO control character:");
        }		
      }
    }
  }
}

Output:

Enter the first input:@
The character @ is not an ISO control character:
Enter the second input:A
The character A is not an ISO control character:

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Java Character Class