Java basics question involving sorting and conditional statements

Question

I cannot figure how to finish my program...

import javax.swing.JOptionPane;
public class Program
{
public static void main(String[] args) {

String num1String = JOptionPane.showInputDialog( " Enter a number :");

String num2String = JOptionPane.showInputDialog( " Enter a number :");

String num3String = JOptionPane.showInputDialog( " Enter a number :");

int num1 = Integer.parseInt(num1String);
int num2 = Integer.parseInt(num2String);
int num3 = Integer.parseInt(num3String);

// THis is the condition I want

if ( num1 <= num2 <= num3)
{

}

else

// Here I want the program to sort so that my condition will be right

}

Answer 1

if ( num1 <= num2 && num2 <= num3)
{