Mastering Java's isISOControl Method

Introduction

A character is an ISO control character if its code lies in the range of '\u000' through '\u001F' or in the range of '\u007F' through '\u009F'.

Skills Graph

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Create a Java file

Create a new Java file named ISOControlChar.java in the ~/project directory by running the following command in the terminal:

touch ~/project/ISOControlChar.java

Write the main method

Now we will write the main method in the ISOControlChar.java file. The main method will read a character from the user and check if it is an ISO control character or not using the isISOControl(char ch) method.

import java.util.Scanner;

public class ISOControlChar {
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        System.out.print("Enter any character: ");
        char ch = sc.next().charAt(0);

        if(Character.isISOControl(ch)){
            System.out.println(ch + " is an ISO control character.");
        } else {
            System.out.println(ch + " is not an ISO control character.");
        }
    }
}

Compile and run the program

Compile the ISOControlChar class by running the following command:

javac ISOControlChar.java

Now, to run the program, enter the following command:

java ISOControlChar

Summary

In this lab, we learned how to use the isISOControl(char ch) method of the Java Character class to check if a character is an ISO control character or not. We also learned to create a Java program to test if a given character is an ISO control character or not.

Java Character isISOControl Method