[Java] I tried to make a rock-paper-scissors game that beginners can run on the console.

Introduction

In 2018, I touched various languages halfway and felt emptiness that I could understand what I wanted to do but could not make something that works by myself, so I focused on java / kotlin and studying. ..

I tried my best to understand object orientation, but it's subtle. ..

By the way, it's a spaghetti code.

What I made

As with ordinary rock-paper-scissors, the one with the most points in five games wins.

The disadvantage is that it is inconvenient because you do not know what the PC has released. ..

**I feel like this. ** **

console.

Give your Player a name
Beginner
Fight as a beginner
[Starting rock-paper-scissors]

[1st round]
===============
stone    ：   0
scissors ：   1
paper    ：   2
===============
Please enter here
1
----------------
Choki (beginner) vs Goo
----------------
Beginner lost
:
:
:
:
[5th round]
===============
stone    ：   0
scissors ：   1
paper    ：   2
===============
Please enter here
2
----------------
Par(Beginner)  vs Par
----------------
It's a draw

[End of rock-paper-scissors]
==================================
Result: [Draw]
==================================

What I was conscious of (my own object-oriented programming)

1. First, write all the processing in the Main.java file.
2. The parts that can be made into parts are put together into a method. (It is better to reduce the number in Main as much as possible)
3. Where you can divide the class, divide it into classes

Main.java

import java.io.IOException;
import java.util.Random;
import java.util.Scanner;

import org.ietf.jgss.Oid;
import org.omg.CORBA.PUBLIC_MEMBER;

public class Main implements jankeninterface{

	
	public static void main(String[] args) throws IOException {
		
		//Player settings
		Player p = new Player();
	    
		//Rock-paper-scissors processing
		Player.jankenbuttle();
	
		//Result display
		result();


	}
	
	

	public static void result() {
		System.out.println("");
		System.out.println("[End of rock-paper-scissors]");
		System.out.println("==================================");
		if(Player.pcWinCount > Player.playerWinCount) {
			System.out.println("Result: [PC has won]");
		}else if(Player.pcWinCount < Player.playerWinCount) {
			System.out.println("result:【"+Player.playername+"Has won]");
		}else {
			System.out.println("Result: [Draw]");
		}
		System.out.println("==================================");
	}
}

Player.java

import java.io.IOException;
import java.util.Random;
import java.util.Scanner;

public class Player {
	public static int playerWinCount = 0;
	public static String playername;
	public static int pcWinCount = 0;
	
	public Player() {
		// TODO Auto-generated constructor stub
		createName();
	}
	
	public static void createName() {
		System.out.println("Give your Player a name");
		Scanner name = new Scanner(System.in);
	    playername = name.nextLine();
	    
	    System.out.println(playername+"Fight as");
	}
	
	public static void jankenbuttle() throws IOException {
		System.out.println("[Starting rock-paper-scissors]");

//Start rock-paper-scissors
		for(int i = 1;i <= 5; i++) {
		System.out.println("");	
		System.out.println("【"+i+"Round]");
		
		System.out.println("===============");
		System.out.println("stone    ：   0");
		System.out.println("scissors ：   1");
		System.out.println("paper    ：   2");
		System.out.println("===============");
		
//Rock-paper-scissors hand of PC
		Random r = new Random();
		int pcNum = r.nextInt(3);
		
		System.out.println("Please enter here");
		
//player's rock-paper-scissors hand
		Scanner s = new Scanner(System.in);
		int playerNum = s.nextInt();
		
//If the player wins
		if(pcNum == 0 && playerNum == 2 || 
		   pcNum == 1 && playerNum == 0 || 
		   pcNum == 2 && playerNum == 1 ) {
			playerWinCount++;
			if(pcNum == 0) {
				System.out.println("");
				System.out.println("Par("+playername+"Mr.)vs goo");
			}else if(pcNum == 1) {
				System.out.println("");
				System.out.println("Goo("+playername+"Mr.)vs choki");
			}else {
				System.out.println("");
				System.out.println("Choki("+playername+"Mr.)vs park");
			}
			System.out.println(playername+"Won");
				
			
//When player loses
		}else if(pcNum == 0 && playerNum == 1||
				 pcNum == 1 && playerNum == 2||
				 pcNum == 2 && playerNum == 0) {
			if(pcNum == 0) {
				System.out.println("----------------");
				System.out.println("Choki ("+playername+"San) vs Goo");
				System.out.println("----------------");
			}else if(pcNum == 1) {
				System.out.println("----------------");
				System.out.println("Par("+playername+"Mr.)vs choki");
				System.out.println("----------------");
			}else {
				System.out.println("----------------");
				System.out.println("Goo("+playername+"Mr.)vs park");
				System.out.println("----------------");
			}
			pcWinCount++;
			System.out.println(playername+"Lost");
		}else {
			if(pcNum == 0) {
				System.out.println("----------------");
				System.out.println("Goo("+playername+"Mr.)  vs Goo");
				System.out.println("----------------");
			}else if(pcNum == 1) {
				System.out.println("----------------");
				System.out.println("Choki("+playername+"Mr.)  vs Choki");
				System.out.println("----------------");
			}else {
				System.out.println("----------------");
				System.out.println("Par("+playername+"Mr.)  vs Par");
				System.out.println("----------------");
			}
			System.out.println("It's a draw");
			
		}
		
		
		}
	}
	
}

javainterface.java

public interface jankeninterface {
	public static final int stone = 0;
	public static final int scissors = 1;
	public static final int paper = 2;
}

Ingenuity

The point that you can set the player name every time the rock-paper-scissors starts

This is the part.

console.

Give your Player a name
->Beginner
Fight as a beginner

I tried to write a name in the argument of the construct, but I could give it a name, but it wouldn't change unless I wrote it in the source code, so I tried my best.

I have to work harder.

reference

https://www.youtube.com/watch?v=FsRHdL_r0pE Why you can't do object-oriented development