사용자:하늘/메모장/java

sudo pacman -S jdk-openjdk

sudo pacman -S code

F1 누르고

> settings json

intellicode 설치하고

java.home 입력해서 자동으로 뜨는 거 확인

"java.jdt.ls.java.home": "/usr/lib/jvm/java-17-openjdk/"

코드 쓰고 F5

package code;

import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Graphics;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;

public class Test extends JFrame implements ActionListener {
	
	class DrawPanel extends JPanel {
		public int positionX; public int positionY;
		public void paintComponent(Graphics g) {
			g.setColor(Color.BLACK);
			g.drawOval(positionX, positionY, 100, 100);
		}
	}
	
	DrawPanel drawPanel;
	int moveOffset;
	
	public Test9_ppt () {
		setSize(800, 500);
		setLayout(new BorderLayout());
		JButton upButton = new JButton("Up");
		upButton.addActionListener(this);
		add(upButton, "North");
		
		JButton downButton = new JButton("Down");
		downButton.addActionListener(this);
		add(downButton , "South");
		
		JButton rightButton = new JButton("Right");
		rightButton.addActionListener(this);
		add(rightButton, "East");
		
		JButton leftButton = new JButton("Left");
		leftButton.addActionListener(this);
		add(leftButton, "West");
		
		drawPanel = new DrawPanel();
		
		getContentPane().add(drawPanel);
		
		moveOffset = 20;
		
		setVisible(true);
	}
	

	public void actionPerformed(ActionEvent e) {
		String command = e.getActionCommand();
		final class Vector{
			static int X; static int Y;
		}
		
		switch (command) {
		case "Up":
			Vector.Y = -1; break;
		
		case "Down":
			Vector.Y = 1; break;
			
		case "Left":
			Vector.X = -1; break;

		case "Right":
			Vector.X = 1; break;
		}
		new Thread(() -> {
			for (int i = 0; i < moveOffset; i++) {
				try {
					Thread.sleep(i);
				} catch (InterruptedException e1) {
					e1.printStackTrace();
				}
				drawPanel.positionY += Vector.Y;
				drawPanel.positionX += Vector.X;
				getContentPane().repaint();
			}
			Vector.X = 0;
			Vector.Y = 0;
		}).start();
	}
	
	public static void main(String[] args) {
		Test9_ppt window = new Test();
	}
}
//오옹 나이스