I made a simple game in Java. Is it possible to refresh the console, so that everytime it receives new data it displays only that?

Question

My game will play 10 rounds, so each time you advance to a new round, the preceding rounds are still visible. Is there anyway to have the console refresh itself so that only the round you are on is visible?

// Rock Paper Scissor Shoot Game
import java.util.Random;
import java.util.Scanner;

public class RockPaperSciccor {
public static void main(String[] args){

    int wins = 0; 
    int losses = 0;
    int rnd;


    System.out.print("*************************************\n*");
    System.out.println("    Rock, Paper, Scissor, Shoot!   *\n* \tBy: Alex Hollander \t    *");
    System.out.println("*\t\t\t\t    *");
    System.out.print("*************************************\n");
    System.out.println("\t\t\t\t\t Instructions:\n\t\t\t\t\t Choose a number 1-3\n \t\t\t\t\t to play the computer.");

    // Play's 10 rounds before terminating
    for(rnd=10;rnd>=1;rnd--){

            //Display's rounds left on the right side
        System.out.println("\t\t\t\t\t  ____________\n\t\t\t\t\t |1 = Rock   |\n\t\t\t\t\t |2 = Paper  |\n\t\t\t\t\t |3 = Scissor|");
        System.out.println("\t\t\t\t\t ~~~~~~~~~~~~~~");
        System.out.println("\t\t\t\t\t|Rounds Left:" + (rnd) + "|");
        System.out.println("\t\t\t\t\t ~~~~~~~~~~~~~~");

        // Creates the PC, who chooses a random # 1-3
    Random GAME = new Random();
    int PC = 1+GAME.nextInt(3);

    //User input
    Scanner input = new Scanner (System.in);
    int SCISSOR, ROCK, PAPER;
    ROCK = 1;
    PAPER = 2;
    SCISSOR= 3;

    int USER =  input.nextInt();

    //If the user enters a value greater then 3 or less than 1 it will terminate the prgm
    //and display an error msg
    while (USER > 3 || USER < 1) {
        System.err.println("Incorrect value entered. Restart the Game\nand choose a number 1-3");
        return;
        }
    System.out.println("___________________");

    //All Possible Outcomes
    //Draw
    if(USER == PC){
        if(USER == SCISSOR){
            System.out.println("You Both Played Scissor");
        }
        if(USER == ROCK){
            System.out.println("You Both Played Rock");
        }
        if(USER == PAPER){
            System.out.println("You Both Played Paper");
        }
        System.out.println("Draw :\\");
        System.out.println("|~~~~~~~~~~~~~~~~~~|");
        System.out.println(" Wins: " + wins + "|Losses: " + losses);
        System.out.println("|~~~~~~~~~~~~~~~~~~|");

    }
    //User wins
    if(USER == SCISSOR)
        if(PC == PAPER){
        System.out.println("You: Scissor\nPC: Paper");
        System.out.println("Scissor Cuts Paper");
        System.out.println("You Win! :]");
        wins++;
        System.out.println("|~~~~~~~~~~~~~~~~~~|");
        System.out.println(" Wins: " + wins + "|Losses: " + losses);
        System.out.println("|~~~~~~~~~~~~~~~~~~|");

    }
    //Pc wins
    else if(PC == ROCK){
        System.out.println("You: Scissor \nPC: Rock");
        System.out.println("Rock Breaks Scissor!");
        System.out.println("PC Wins! >:D");
        losses++;
        System.out.println("|~~~~~~~~~~~~~~~~~~|");
        System.out.println(" Wins: " + wins + "|Losses: " + losses);
        System.out.println("|~~~~~~~~~~~~~~~~~~|");

    }
    //User wins
    if(USER == ROCK)
        if(PC == SCISSOR ){
        System.out.println("You: Rock\nPC: Scissor");
        System.out.println("Rock Breaks Scissor");
        System.out.println("You Win! :]");
        wins++;         
        System.out.println("|~~~~~~~~~~~~~~~~~~|");
        System.out.println(" Wins: " + wins + "|Losses: " + losses);
        System.out.println("|~~~~~~~~~~~~~~~~~~|");
    }   
    //Pc wins
    else if (PC == PAPER){
        System.out.println("You: Rock\nPC: Paper");
        System.out.println("Paper Covers Rock!");
        System.out.println("PC Wins! >:D");
        losses++;
        System.out.println("|~~~~~~~~~~~~~~~~~~|");
        System.out.println(" Wins: " + wins + "|Losses: " + losses);
        System.out.println("|~~~~~~~~~~~~~~~~~~|");
    }
    //User Wins
    if(USER == PAPER)
        if(PC == ROCK){
        System.out.println("You: Paper\nPC: Rock");
        System.out.println("Paper Covers Rock");
        System.out.println("You Win! :]");
        wins++;
        System.out.println("|~~~~~~~~~~~~~~~~~~|");
        System.out.println(" Wins: " + wins + "|Losses: " + losses);
        System.out.println("|~~~~~~~~~~~~~~~~~~|");
    }
    // Pc Wins 
    else if (PC == SCISSOR){
        System.out.println("You: Paper\nPC: Scissor");
        System.out.println("Scissor Cuts Paper!");
        System.out.println("PC Wins! >:D");
        losses++;
        System.out.println("|~~~~~~~~~~~~~~~~~~|");
        System.out.println(" Wins: " + wins + "|Losses: " + losses);
        System.out.println("|~~~~~~~~~~~~~~~~~~|");
        }
        if(rnd==1){// I used .err so that in eclipse, the text would be red

        System.err.println("\t\t\t\t\t" +
                " Game Over!");
            if(wins<losses){
                System.err.println("\t\t\t\t\t YOU HAVE BEEN BEATEN BY THE PC!\n \t\t\t\t\t\t>:D");
            }else if(wins>losses){
                System.err.println("\t\t\t\t\t YOU BEAT THE COMPUTER!\n \t\t\t\t\t\t:]");
            }else if(wins==losses){
                System.err.println("\t\t\t\t\t STALEMATE!\n \t\t\t\t\t\t:\\");
            }
        }
    }       
}

}

possible duplicate of [clear screen option in java](http://stackoverflow.com/questions/1682212/clear-screen-option-in-java) — Madara's Ghost, Jun 09 '12 at 08:14

Adam Zalcman · Accepted Answer · 2012-03-02T22:46:08.617

If your platform is UNIX/Linux and you run your game on a terminal, all you need to do is send a control sequence which clears the screen. You can find out what the sequence is by checking what the clear command does, e.g. with the following command:

clear | od -t c

On most terminals this displays

0000000  033   [   H 033   [   2   J                                    
0000007

which is really two ANSI/VT100 control sequences: Cursor Home and Erase Screen. See ANSI/VT100 control sequences for details.

You can send the sequence from Java like this:

System.out.println("\033[H\033[2J");

If you're looking for a more portable way of doing this, you can just display a sufficiently large number of newline characters. This however will position the cursor at the bottom of the screen.

score 1 · Answer 2 · edited May 23 '17 at 12:31

1

You want to "clear the screen" or "clear the console"

This is a duplicate of this question

edited May 23 '17 at 12:31

Community

1
1

answered Mar 02 '12 at 22:46

Mark Harviston

660
4
18

I made a simple game in Java. Is it possible to refresh the console, so that everytime it receives new data it displays only that?

2 Answers2