java - 隐藏文本字符串？

Question

我有一串文本“Highscore:”，我希望它显示在 JFrame 的底部。当我尝试增加 y 时，文本显示到大约 100，然后如果我想再增加它，它就会消失吗？不过我希望它超过 100...

这是我的代码:

package Main;

import java.awt.Color;
import java.awt.Cursor;
import java.awt.Font;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.MouseEvent;

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




public class Game {


public static void main(String[] args) {

     final JFrame frame = new JFrame("Tennis Game");
     frame.setSize(300,400);
     frame.setResizable(false);
     frame.setVisible(true);
     frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

     //Graphics add
     Menu graphics = new Menu();

     frame.add(graphics);
     graphics.setBounds(0, 0, 300, 100);

     frame.setLayout(null);

     //Buttons
     //Play button
     final JButton b = new JButton("Play");

     b.setFocusPainted(false);
     b.setFont(new Font(Font.SANS_SERIF, Font.BOLD, 20));
     b.setBounds(110,100,80,40);
     b.setForeground(Color.BLACK);

     b.addMouseListener(new java.awt.event.MouseAdapter(){

        public void mouseEntered(MouseEvent evt) {
             b.setForeground(Color.RED);
             b.setCursor(Cursor.getPredefinedCursor(Cursor.HAND_CURSOR));
         }

        public void mouseExited(MouseEvent evt) {
             b.setForeground(Color.BLACK);
         }
        public void mouseClicked(MouseEvent evt){


        }

     });

     //Exit button
     final JButton b2 = new JButton("Exit");

     b2.setFocusPainted(false);
     b2.setFont(new Font(Font.SANS_SERIF, Font.BOLD, 20));
     b2.setBounds(110, 180, 80, 40);
     b2.setForeground(Color.BLACK);

     b2.addActionListener(new ActionListener(){

        @Override
        public void actionPerformed(ActionEvent evt) {
            System.exit(0);

        }



     });

     b2.addMouseListener(new java.awt.event.MouseAdapter(){

        public void mouseEntered(MouseEvent evt) {
             b2.setForeground(Color.RED);
             b2.setCursor(Cursor.getPredefinedCursor(Cursor.HAND_CURSOR));
         }

        public void mouseExited(MouseEvent evt) {
             b2.setForeground(Color.BLACK);
         }

     });

     //Help Button
     final JButton b3 = new JButton("Help");

     b3.setFocusPainted(false);
     b3.setFont(new Font(Font.SANS_SERIF, Font.BOLD, 20));
     b3.setBounds(110, 140, 80, 40);
     b3.setForeground(Color.BLACK);

     b3.addMouseListener(new java.awt.event.MouseAdapter(){

        public void mouseEntered(MouseEvent evt) {
             b3.setForeground(Color.RED);
             b3.setCursor(Cursor.getPredefinedCursor(Cursor.HAND_CURSOR));
         }

        public void mouseExited(MouseEvent evt) {
             b3.setForeground(Color.BLACK);
         }
        public void mouseClicked(MouseEvent evt){


        }

     });


     frame.add(b);
     frame.add(b2);
     frame.add(b3);


 }
 }

另外:

package Main;

import java.awt.Color;
import java.awt.Font;
import java.awt.*; 
import javax.swing.*;



public class Menu extends JPanel {

int highscore = 0;

public void paintComponent(Graphics g){
    super.paintComponent(g);

    g.setFont(new Font("Arial", Font.BOLD, 30)); 
    g.setColor(Color.BLACK);
    g.drawString("TENNIS GAME", 40, 60);

    g.setFont(new Font("Arial", Font.BOLD, 18)); 
    g.setColor(Color.BLACK);
    g.drawString("Made by Jared Butterfield", 36, 82);

    //TEXT HERE
    //TEXT HERE
    //TEXT HERE
    g.setFont(new Font("Arial", Font.BOLD, 18)); 
    g.setColor(Color.BLACK);
    g.drawString("Highscore: "+ highscore, 0, 150);


}


}

我尝试在高分文本寻求帮助的地方添加评论。

Answer 1

I have a string of text "Highscore: " and I want this to show up at the bottom of my JFrame.

创建一个 JLabel，然后使用以下方法将标签添加到框架:

frame.add(label, BorderLayout.SOUTH);

这假设您使用框架的默认 BorderLayout，这始终是一个好主意。

所有其他自定义绘画代码也应替换为 JLabels。您再次使用适当的布局管理器将标签添加到面板。阅读 Layout Managers 上的 Swing 教程了解更多信息和演示代码以帮助您入门。