Write a Java-program to check the given character is number or not

Write a Java-program to check the given character is number or not

Program

public class Main
{
	public static void main(String args[])
	{
        char ch='4';
        if(ch>='0' && ch<='0')
        {
            System.out.println("Number");
        }
        else
        {
            System.out.println("Not a Number");
        }
	}
}	

Number

Using CommandLine Arguments

public class Main
{
	public static void main(String args[])
	{
        char ch;
        ch=args[0].charAt(0);
        if(ch>='0' && ch<='9')
        {
            System.out.println("Number");
        }
        else
        {
            System.out.println("Not a Number");
        }
	}
}	

Number

Using Scanner Class

import java.util.*;
public class Main
{
	public static void main(String args[])
	{
        char ch;
        Scanner s=new Scanner(System.in);
        System.out.println("Enter Number");
        ch=s.next().charAt(0);
        if(ch>='0' && ch<='9')
        {
            System.out.println("Number");
        }
        else
        {
            System.out.println("Not a Number");
        }
	}
}	

Enter Number
4
Number

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