Question

我正在使用一个简单的GUI，我的文本字段很难。

enter image description here 这就是我正在使用的。右边的那个是它看起来的样子，左边的是我做的。我已经成功地将标签地址1，地址2等等。但是当我开始放置文本字段时，它就消失了。我尝试使用setSize，setLocation，但没有任何作用。

同样的事情发生在上层小组“Paymen Method”，正如预期结果所示，应该有一个文本字段。我在我的代码中有它们但是它们在运行时没有显示出来。请帮助。

这是我的代码：

    import javax.swing.*;
    import java.awt.*;
    public class PanelDemo extends javax.swing.JFrame{
    private static final int FRAME_WIDTH = 300;
    private static final int FRAME_HEIGHT = 350;
    private static final int FRAME_X_ORIGIN = 150;
    private static final int FRAME_Y_ORIGIN = 250;
    public static void main(String[] args){
    //Frame
    JFrame contentPane = new javax.swing.JFrame();
    contentPane.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    contentPane.setSize(300,350);
    contentPane.setResizable(false);
    contentPane.setLayout(new BorderLayout());
    //Payment Panel
    JPanel paymentPanel = new javax.swing.JPanel();
    paymentPanel.setLayout(new BorderLayout());
    //paymentPanel.setPreferredSize(new java.awt.Dimension(270, 90));
    paymentPanel.setBorder(javax.swing.BorderFactory.createTitledBorder(null, "Payment Method", javax.swing.border.TitledBorder.DEFAULT_JUSTIFICATION, javax.swing.border.TitledBorder.DEFAULT_POSITION, new java.awt.Font("Arial", 1, 12)));

    ////Components inside Payment Panel
    ////A) Panels: Radio and Details
    JPanel radioPanel = new JPanel();
    radioPanel.setLayout(new GridLayout(3,1));
    JRadioButton Rbutton1 = new JRadioButton("Credit Card");
    JRadioButton Rbutton2 = new JRadioButton("E-Funds");
    JRadioButton Rbutton3 = new JRadioButton("Check");
    Rbutton3.setSelected(true);
    ButtonGroup Bgroup = new ButtonGroup();
    Bgroup.add(Rbutton1);
    Bgroup.add(Rbutton2);
    Bgroup.add(Rbutton3);
    radioPanel.add(Rbutton1);
    radioPanel.add(Rbutton2);
    radioPanel.add(Rbutton3);

    //I thought of using a panel as a gap, but still didn't work
    /*JPanel gap = new JPanel();
    gap.setLayout(new BorderLayout());
    gap.setPreferredSize(new java.awt.Dimension(10, 90));*/


    JPanel detailsPanel = new JPanel();
    detailsPanel.setLayout(new GridLayout(2,1));
    //detailsPanel
    JLabel Accountnum = new JLabel("Account number:");
    JTextField Account = new JTextField();
    Account.setPreferredSize(new java.awt.Dimension(90, 40));
    detailsPanel.add(Accountnum);
    detailsPanel.add(Account);

    paymentPanel.add(gap, BorderLayout.CENTER);
    paymentPanel.add(detailsPanel);
    paymentPanel.add(radioPanel);
    contentPane.add(paymentPanel, BorderLayout.PAGE_START);

    ////Address Information Panel
    JPanel addressPanel = new JPanel();
    addressPanel.setLayout(new BorderLayout());
    addressPanel.setSize(new java.awt.Dimension(270, 80));
    addressPanel.setBorder(javax.swing.BorderFactory.createTitledBorder(null, "Adress Information", javax.swing.border.TitledBorder.DEFAULT_JUSTIFICATION, javax.swing.border.TitledBorder.DEFAULT_POSITION, new java.awt.Font("Arial", 1, 12)));
    contentPane.add(addressPanel, BorderLayout.CENTER);

    ////Components inside the Address Information Panel
    ////A) Labels (Address 1, Address 2,...)
    JPanel InfoLabel = new JPanel();
    InfoLabel.setLayout(new GridLayout(5,1));
    JLabel address1 = new JLabel("Address 1:");
    JLabel address2 = new JLabel("Address 2:");
    JLabel city = new JLabel("City:");
    JLabel state = new JLabel("State:");
    JLabel zip = new JLabel("Zip Code:");

    InfoLabel.add(address1);
    InfoLabel.add(address2);
    InfoLabel.add(city);
    InfoLabel.add(state);
    InfoLabel.add(zip);

    ////B)Text Fields
    JPanel infotext = new JPanel();
    infotext.setLayout(new GridLayout(5,1));

    JTextField text1 = new JTextField();
    JTextField text2 = new JTextField();
    JTextField text3 = new JTextField();
    JTextField text4 = new JTextField();
    JTextField text5 = new JTextField();

    addressPanel.add(InfoLabel);
    addressPanel.add(infotext);

    JPanel controlPanel = new JPanel(); 
    controlPanel.setLayout(new FlowLayout());
    JLabel test = new JLabel("test");
    controlPanel.add(test);
    contentPane.add(controlPanel, BorderLayout.PAGE_END);


    contentPane.setVisible(true);
}

}

Answer 1

我稍微修改了你的代码，以获得满足你需要的版本。基本上，我所做的只是清理你使用布局管理器的方式。如果您希望必须执行多个此类用户界面，那么您可以尝试阅读Swing布局管理器的javadoc，以便更好地理解它们。

以下是工作版本：

import java.awt.BorderLayout;
import java.awt.FlowLayout;
import java.awt.GridLayout;

import javax.swing.ButtonGroup;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JRadioButton;
import javax.swing.JTextField;

public class PanelDemo extends javax.swing.JFrame {
  private static final int FRAME_WIDTH = 300;
  private static final int FRAME_HEIGHT = 350;
  private static final int FRAME_X_ORIGIN = 150;
  private static final int FRAME_Y_ORIGIN = 250;

  public static void main(String[] args) {
    // Frame
    JFrame contentPane = new javax.swing.JFrame();
    contentPane.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    contentPane.setSize(300, 350);
    contentPane.setResizable(false);
    contentPane.setLayout(new BorderLayout());
    // Payment Panel
    JPanel paymentPanel = new javax.swing.JPanel();
    paymentPanel.setLayout(new BorderLayout());
    // paymentPanel.setPreferredSize(new java.awt.Dimension(270, 90));
    paymentPanel.setBorder(javax.swing.BorderFactory.createTitledBorder(null, "Payment Method",
        javax.swing.border.TitledBorder.DEFAULT_JUSTIFICATION, javax.swing.border.TitledBorder.DEFAULT_POSITION, new java.awt.Font("Arial", 1, 12)));

    // //Components inside Payment Panel
    // //A) Panels: Radio and Details
    JPanel radioPanel = new JPanel();
    radioPanel.setLayout(new GridLayout(3, 1));
    JRadioButton Rbutton1 = new JRadioButton("Credit Card");
    JRadioButton Rbutton2 = new JRadioButton("E-Funds");
    JRadioButton Rbutton3 = new JRadioButton("Check");
    Rbutton3.setSelected(true);
    ButtonGroup Bgroup = new ButtonGroup();
    Bgroup.add(Rbutton1);
    Bgroup.add(Rbutton2);
    Bgroup.add(Rbutton3);
    radioPanel.add(Rbutton1);
    radioPanel.add(Rbutton2);
    radioPanel.add(Rbutton3);

    // I thought of using a panel as a gap, but still didn't work
    /*
     * JPanel gap = new JPanel(); gap.setLayout(new BorderLayout());
     * gap.setPreferredSize(new java.awt.Dimension(10, 90));
     */

    JPanel detailsPanel = new JPanel();
    detailsPanel.setLayout(new GridLayout(2, 2));
    // detailsPanel
    JLabel Accountnum = new JLabel("Account number:");
    JTextField Account = new JTextField();
    Account.setPreferredSize(new java.awt.Dimension(90, 40));
    detailsPanel.add(Accountnum);
    detailsPanel.add(Account);

    // paymentPanel.add(gap, BorderLayout.CENTER);
    paymentPanel.add(radioPanel, BorderLayout.CENTER);
    paymentPanel.add(detailsPanel, BorderLayout.EAST);
    contentPane.add(paymentPanel, BorderLayout.PAGE_START);

    // //Address Information Panel
    JPanel addressPanel = new JPanel();
    addressPanel.setLayout(new BorderLayout());
    addressPanel.setSize(new java.awt.Dimension(270, 80));
    addressPanel.setBorder(javax.swing.BorderFactory.createTitledBorder(null, "Adress Information",
        javax.swing.border.TitledBorder.DEFAULT_JUSTIFICATION, javax.swing.border.TitledBorder.DEFAULT_POSITION, new java.awt.Font("Arial", 1, 12)));
    contentPane.add(addressPanel, BorderLayout.CENTER);

    // //Components inside the Address Information Panel
    // //A) Labels (Address 1, Address 2,...)
    JPanel InfoLabel = new JPanel();
    InfoLabel.setLayout(new GridLayout(5, 2));
    JLabel address1 = new JLabel("Address 1:");
    JLabel address2 = new JLabel("Address 2:");
    JLabel city = new JLabel("City:");
    JLabel state = new JLabel("State:");
    JLabel zip = new JLabel("Zip Code:");
    JTextField text1 = new JTextField();
    JTextField text2 = new JTextField();
    JTextField text3 = new JTextField();
    JTextField text4 = new JTextField();
    JTextField text5 = new JTextField();

    InfoLabel.add(address1);
    InfoLabel.add(text1);
    InfoLabel.add(address2);
    InfoLabel.add(text2);
    InfoLabel.add(city);
    InfoLabel.add(text3);
    InfoLabel.add(state);
    InfoLabel.add(text4);
    InfoLabel.add(zip);
    InfoLabel.add(text5);

    // //B)Text Fields
    JPanel infotext = new JPanel();
    infotext.setLayout(new GridLayout(5, 1));

    addressPanel.add(InfoLabel, BorderLayout.CENTER);
//    addressPanel.add(infotext);

    JPanel controlPanel = new JPanel();
    controlPanel.setLayout(new FlowLayout());
    JLabel test = new JLabel("test");
    controlPanel.add(test);
    contentPane.add(controlPanel, BorderLayout.PAGE_END);
    contentPane.setVisible(true);
  }
}

Answer 2

您忘了设置布局区域。

paymentPanel.add(detailsPanel, BorderLayout.EAST);
paymentPanel.add(radioPanel, BorderLayout.CENTER);

addressPanel.add(InfoLabel,BorderLayout.WEST); 
addressPanel.add(infotext, BorderLayout.CENTER);

如何修复我的文本字段，使其不与旁边的面板重叠？

2 个答案: