Question

我正在为java中的棋盘游戏构建这个GUI ..我创建了大量的面板，标签和按钮，并将它们全部添加到框架中。一切正常，除了我无法让图像显示出来。这是我的代码和支持评论。我无法弄清楚为什么图像不会出现。我尝试了很多不同的尝试，因为你可以看到有很多注释掉的代码。在此先感谢您的帮助。

package gui;

import java.awt.Color;
import java.awt.FlowLayout;
import java.awt.Frame;

import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JMenu;
import javax.swing.JMenuBar;
import javax.swing.JMenuItem;
import javax.swing.JPanel;
import javax.swing.JTextField;

import listeners.PlaceButtonListener;
import listeners.TextFieldListener;

public class GUI {

public static void main(String[] args)
{
    new GUI();
}

public GUI()
{

    int playerTurn = 1; // Variable to hold what player's window it is

    JFrame frame = new JFrame();
    frame.setSize(880, 680);

    //JPanel totalGUI = new JPanel(); // Contains all other panels
    //totalGUI.setLayout(null);

    // Creation of Panels on totalGUI
    JPanel scorePanel = new JPanel();
    JPanel buttonPanel = new JPanel();
    JPanel boardPanel = new JPanel();
    JPanel tilePanel = new JPanel();
    JPanel turnPanel = new JPanel();
    JPanel playerPanel = new JPanel();
    JPanel placePanel = new JPanel();

    // Creation of Labels
    JLabel scoreLabel = new JLabel("Score:");
    JLabel playerLabel = new JLabel("Player: " + playerTurn);
    JLabel tileLabel = new JLabel("Current Tile:");
    JLabel turnLabel = new JLabel("Player " + playerTurn +"'s Turn");
    JLabel imageLabel = new JLabel(new ImageIcon("a1.png"));

    // Creation of Buttons
    JButton resignButton = new JButton("Resign");
    JButton placeButton = new JButton ("Place");
    JButton commitButton = new JButton("Commit");
    JButton removeButton = new JButton("Remove");

    // Creation and adding of JMenuBar, JMenus and JMenuItems
    JMenuBar mBar = new JMenuBar();
    JMenu file = new JMenu("File");
    JMenuItem saveAndQuit = new JMenuItem("Save and Quit");
    JMenuItem quit = new JMenuItem("Quit");
    JMenu help = new JMenu("Help");
    JMenuItem gameManual = new JMenuItem("Game Manual");
    file.add(saveAndQuit);
    file.add(quit);
    help.add(gameManual);
    mBar.add(file);
    mBar.add(help);

    // Creates the text field where the player will input x and y values
    JTextField placeField = new JTextField(10);

    // playerPanel displays what Player's window it is
    playerLabel.setLocation(0, 0);
    playerLabel.setSize(120, 30);
    playerLabel.setHorizontalAlignment(0);
    playerPanel.add(playerLabel);
    playerPanel.setLayout(null);
    playerPanel.setLocation(350, 0);
    playerPanel.setSize(120, 30);
    //totalGUI.add(playerPanel);
    frame.add(playerPanel);


    // scorePanel displays the score of all Players
    scoreLabel.setLocation(0, 0);
    scoreLabel.setSize(120, 30);
    scoreLabel.setHorizontalAlignment(0);

    scorePanel.add(scoreLabel);
    scorePanel.setLayout(null);
    scorePanel.setLocation(740, 40);
    scorePanel.setSize(120, 300);
    scorePanel.setBackground(Color.YELLOW);
    //totalGUI.add(scorePanel);
    frame.add(scorePanel);


    // Places and adds buttons to panel
    buttonPanel.add(commitButton);
    commitButton.setLocation(10, 0);
    commitButton.setSize(120, 30);

    buttonPanel.add(placeButton);
    placeButton.setLocation(140, 0);
    placeButton.setSize(120, 30);

    buttonPanel.add(removeButton);
    removeButton.setLocation(10, 40);
    removeButton.setSize(120, 30);

    buttonPanel.add(resignButton);
    resignButton.setLocation(140, 40);
    resignButton.setSize(120, 30);

    buttonPanel.setLayout(null);
    buttonPanel.setLocation(350, 560);
    buttonPanel.setSize(280,100);
    buttonPanel.setBackground(Color.BLUE);
    //totalGUI.add(buttonPanel);
    frame.add(buttonPanel);

    // placeField takes user input of where to place tile
    placeField.setLocation(145, 0);
    placeField.setVisible(true);
    placeField.setSize(60, 30);
    placePanel.add(placeField);
    placePanel.setLocation(630, 560);
    placePanel.setSize(150, 40);
    placePanel.setBackground(Color.BLACK);
    frame.add(placePanel);


    // Sets size of Board and adds it to totalGUI
    imageLabel.setSize(100, 100);
    imageLabel.setLocation(10,10);
    boardPanel.setLayout(null);
    boardPanel.setLocation(220, 40);
    boardPanel.setSize(480, 480);
    // boardPanel.setBackground(Color.BLACK);


    boardPanel.add(imageLabel);
    //totalGUI.add(boardPanel);
    frame.add(boardPanel);

    //add JLabel on the boardPanel to display board configuration. HashMap?



    // Adds tileLabel to tilePanel and sets the size of tilePanel
    tileLabel.setLocation(0, 0);
    tileLabel.setSize(200, 30);
    tileLabel.setHorizontalAlignment(0);

    tilePanel.add(tileLabel);
    tilePanel.setLayout(null);
    tilePanel.setLocation(0, 40);
    tilePanel.setSize(200, 210);
    tilePanel.setBackground(Color.RED);
    //totalGUI.add(tilePanel);
    frame.add(tilePanel);


    // Adds turnLabel to turnPanel and sets size
    turnLabel.setLocation(0, 0);
    turnLabel.setSize(150, 30);
    turnLabel.setHorizontalAlignment(0);

    turnPanel.add(turnLabel);
    turnPanel.setLayout(null);
    turnPanel.setLocation(0, 280);
    turnPanel.setSize(150, 30);
    turnPanel.setBackground(Color.GREEN);
    //totalGUI.add(turnPanel);
    frame.add(turnPanel);


    // Adds all the panels and menus to the Frame
    frame.setJMenuBar(mBar);
    //frame.add(totalGUI);
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    frame.setSize(280, 190);
    //frame.pack();
    frame.setVisible(true);     
}

}

Answer 1

假设a1.png与GUI.class位于同一文件夹中，您可能需要像下面这样加载它：

new ImageIcon(GUI.class.getResource("a1.png"))

将问题添加到JAVA中的GUI时出现问题

1 个答案: