Five Ways to Take Input in Java

Program 1: import java.io.*;
public class Program1 
{
    public static void main(String ar[])
    {
    	int a,b,c;
    	DataInputStream ds=new DataInputStream(System.in);
    	try
    	{
    		System.out.printf("Enter the number : ");
    		a=Integer.parseInt(ds.readLine());
    		System.out.printf("Enter the number : ");
    		b=Integer.parseInt(ds.readLine());
    		c=a+b;
    		System.out.format("The sum of %d and %d is %d",a,b,c);
    	}
    	catch(Exception e)
    	{
    	}
    }
}

Program 2:
import java.io.*;
public class Program2 
{
    public static void main(String ar[])throws IOException
    {
    	int a,b,c;
    	InputStreamReader str=new InputStreamReader(System.in);
    	BufferedReader bfr=new BufferedReader(str);
    	System.out.printf("Enter the number : ");
    	a=Integer.parseInt(bfr.readLine());
    	System.out.printf("Enter the number : ");
    	b=Integer.parseInt(bfr.readLine());
    	c=a+b;
    	System.out.format("The sum of %d and %d is %d",a,b,c);
    }
}

Program 3:
import java.io.*;
public class Program3
{
    public static void main(String ar[])throws IOException
    {
    	int a,b,c;
    	DataInputStream ds=new DataInputStream(System.in);
    	System.out.printf("Enter te number : ");
    	a=Integer.parseInt(ds.readLine());
    	System.out.printf("Enter the number : ");
    	b=Integer.parseInt(ds.readLine());
    	c=a+b;
    	System.out.format("The sum of %d and %d is %d",a,b,c);
    }
}

Program 4:
import java.util.*;
public class Program4
{
	public static void main(String ar[])
	{
		Scanner sc=new Scanner(System.in);
		int a;
		String str=new String();
		float f;
		System.out.print("Enter the integer value : ");
		a=sc.nextInt();
		System.out.print("Enter the String value : ");
		str=sc.nextLine();
		System.out.print("Enter the float value : ");
		f=sc.nextFloat();
		System.out.printf("The value 0f integer is %d \nThe value of float is %f\n The value of string is %s",a,f,str);
	}
}

Program 5:
import javax.swing.*;
public class Program5 
{
     public static void main(String[] args) 
     	{
     		String a;
     		a=JOptionPane.showInputDialog(null, "Enter some text : ");
        	JOptionPane.showMessageDialog(null,a);
         } 
}