I am making a java code and I need to wait a few milliseconds.

while(true)
{
    //wait
    //more code
}

How can I make my code wait? I usually code in C# and i can do Thread.Sleep() but I didn’t found a way to make it work in java. Also, this is my current full code if you are wondering:

import javax.swing.*;
import java.util.*;

class Main{
    public static void main(String [] arg){
        Boolean isEnded = false;
        Scanner newScan = new Scanner(System.in);
        
        JFrame jf = new JFrame("Weird 3N 1 Calculator");
        JLabel jl = new JLabel("No Seed Entered.");
        
        jf.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); 
        jf.setSize(300,300);
        jf.getContentPane().add(jl);
        jf.setVisible(true);

        System.out.println("Enter a seed: ");
        String seed = newScan.nextLine();
        Integer x = Integer.valueOf(seed);
        
        while(isEnded == false)         
        {
            //Thread.sleep(100);
            
            if(x == 1)  
            {
                isEnded = true;
                jl.setText("Last Number Is: "   x);
            }       
            else
            {
                if(x % 2 == 0)  
                {       
                    System.out.println(x / 2);
                    x = x / 2;
                    jl.setText("Now:"   x);
                }   
                else
                {   
                    System.out.println(x * 3   1);  
                    x = x * 3   1;
                    jl.setText("Now:"   x);
                }   
            }
        }
    }
}

Also, I just started coding in Java. My code is probably not well made and could be improved. Thanks

-Me

CodePudding user response：

The best way to wait here is Thread.sleep(n) method. In the situation, where you have multiple threads, you can tell threadA to wait treadB finished by calling treadB.join() method.