Question

我有一个Java任务，我需要在其中构建一个程序，用于在学生之间交换信息。我正在使用IntelliJ IDEA和一个名为JFormDesigner的插件来设计GUI。我想在点击按钮时显示文件选择器。我尝试了不同的实现，但没有实现。单击按钮时屏幕上不显示任何内容我想知道是否有人可以帮我找到解决方案。

这是按钮代码：

 ChooseButton1.addMouseListener(new MouseAdapter() {
            @Override
            public void mouseClicked(MouseEvent e) {
                ChooseButton1MouseClicked(e);
            }
        });

这是实施行动的方法：

private void ChooseButton1MouseClicked(MouseEvent e) {

    JFileChooser fileChooser = new JFileChooser();
    int returnValue = fileChooser.showOpenDialog(null);
    if (returnValue == JFileChooser.APPROVE_OPTION) 
    {
    File selectedFile = fileChooser.getSelectedFile();
    System.out.println(selectedFile.getName());
    }
}

这是测试代码：

import java.awt.event.*;
import javax.swing.*;
import javax.swing.GroupLayout;
import java.io.*;

public class Test extends JPanel {

private JButton ChooseButton;

public Test() {
    initComponents();
}

private void ChooseButtonActionPerformed(ActionEvent e) {
    JFileChooser fileChooser = new JFileChooser();
    int returnValue = fileChooser.showOpenDialog(null);
    if (returnValue == JFileChooser.APPROVE_OPTION)
    {
        File selectedFile = fileChooser.getSelectedFile();
        System.out.println(selectedFile.getName());
    }
}

private void initComponents() {

    ChooseButton = new JButton();


    setBorder(new javax.swing.border.CompoundBorder(
                                                           new javax.swing.border.TitledBorder(new javax.swing.border.EmptyBorder(0, 0, 0, 0),
            "JFormDesigner Evaluation", javax.swing.border.TitledBorder.CENTER,
            javax.swing.border.TitledBorder.BOTTOM, new java.awt.Font("Dialog", java.awt.Font.BOLD, 12),
            java.awt.Color.red), getBorder())); addPropertyChangeListener(new java.beans.PropertyChangeListener(){public void propertyChange(java.beans.PropertyChangeEvent e) {
        if("border".equals(e.getPropertyName())) throw new RuntimeException();
    }
    });


    //---- ChooseButton ----
    ChooseButton.setText("Choose");
    ChooseButton.addActionListener(new ActionListener() {
        @Override
        public void actionPerformed(ActionEvent e) {
            ChooseButtonActionPerformed(e);
        }
    });

    GroupLayout layout = new GroupLayout(this);
    setLayout(layout);
    layout.setHorizontalGroup(
                                     layout.createParallelGroup()
            .addGroup(layout.createSequentialGroup()
                              .addGap(155, 155, 155)
                              .addComponent(ChooseButton)
                              .addContainerGap(175, Short.MAX_VALUE))
    );
    layout.setVerticalGroup(
                                   layout.createParallelGroup()
            .addGroup(layout.createSequentialGroup()
                .addGap(125, 125, 125)
                .addComponent(ChooseButton)
                .addContainerGap(143, Short.MAX_VALUE))
    );
}

 public void main(String[] args) {

    Runnable runnable = new Runnable() {
        @Override public void run() {
            new Test();
        }

};
    EventQueue.invokeLater(runnable);
}

}

Answer 1

选择其他听众

ChooseButton1.addActionListener(new ActionListener() {
    @Override
    public void actionPerformed(ActionEvent e) {
        ChooseButton1MouseClicked(e);
    }
});

单击按钮显示文件选择器。 Java Swing

1 个答案: