小程序未显示完整

Question

我刚刚创建了一个小程序

public class HomeApplet extends JApplet {

    private static final long serialVersionUID = -7650916407386219367L;

    //Called when this applet is loaded into the browser.
    public void init() {
        //Execute a job on the event-dispatching thread; creating this applet's GUI.
//      setSize(400, 400);
        try {
            SwingUtilities.invokeAndWait(new Runnable() {
                public void run() {
                    createGUI();
                }
            });
        } catch (Exception e) { 
            System.err.println("createGUI didn't complete successfully");
        }
    }

    private void createGUI() {
        RconSection rconSection = new RconSection();
        rconSection.setOpaque(true); 

//      CommandArea commandArea = new CommandArea();
//      commandArea.setOpaque(true); 

        JTabbedPane tabbedPane = new JTabbedPane();
//      tabbedPane.setSize(400, 400);
        tabbedPane.addTab("Rcon Details", rconSection);
//      tabbedPane.addTab("Commad Area", commandArea); 


        setContentPane(tabbedPane);       
    }
}

其中第一个选项卡是：

package com.rcon;

import java.awt.BorderLayout;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.JButton;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JTextField;

import com.Bean.RconBean;
import com.util.Utility;

public class RconSection extends JPanel implements ActionListener{
    /**
     * 
     */
    private static final long serialVersionUID = -9021500288377975786L;
    private static String TEST_COMMAND = "test";
    private static String CLEAR_COMMAND = "clear";
    private static JTextField ipText = new JTextField();
    private static JTextField portText = new JTextField();
    private static JTextField rPassText = new JTextField();
    //      private DynamicTree treePanel;

    public RconSection() {
//      super(new BorderLayout());
        JLabel ip = new JLabel("IP");
        JLabel port = new JLabel("Port");
        JLabel rPass = new JLabel("Rcon Password");

        JButton testButton = new JButton("Test");
        testButton.setActionCommand(TEST_COMMAND);
        testButton.addActionListener(this);

        JButton clearButton = new JButton("Clear");
        clearButton.setActionCommand(CLEAR_COMMAND);
        clearButton.addActionListener(this);

        JPanel panel = new JPanel(new GridLayout(3,2));
        panel.add(ip);
        panel.add(ipText);
        panel.add(port);
        panel.add(portText);
        panel.add(rPass);
        panel.add(rPassText);

        JPanel panel1 = new JPanel(new GridLayout(1,3));
        panel1.add(testButton);
        panel1.add(clearButton);

        add(panel);
        add(panel1);
//      add(panel, BorderLayout.NORTH);
//      add(panel1, BorderLayout.SOUTH);
    }

    @Override
    public void actionPerformed(ActionEvent arg0) {
        if(arg0.getActionCommand().equals(TEST_COMMAND)){
            String ip = ipText.getText().trim();
            if(!Utility.checkIp(ip)){
                ipText.requestFocusInWindow();
                ipText.selectAll();
                JOptionPane.showMessageDialog(this,"Invalid Ip!!!");
                return;
            }
            String port = portText.getText().trim();
            if(port.equals("") ||  !Utility.isIntNumber(port)){
                portText.requestFocusInWindow();
                portText.selectAll();
                JOptionPane.showMessageDialog(this,"Invalid Port!!!");
                return;
            }
            String pass = rPassText.getText().trim();
            if(pass.equals("")){
                rPassText.requestFocusInWindow();
                rPassText.selectAll();
                JOptionPane.showMessageDialog(this,"Enter Rcon Password!!!");
                return;
            }
            RconBean rBean = RconBean.getBean();
            rBean.setIp(ip);
            rBean.setPassword(pass);
            rBean.setPort(Integer.parseInt(port));
            if(!Utility.testConnection()){
                rPassText.requestFocusInWindow();
                rPassText.selectAll();
                JOptionPane.showMessageDialog(this,"Invalid Rcon!!!");
                return;
            }else{
                JOptionPane.showMessageDialog(this,"Correct Rcon!!!");
                return;
            }
        }
        else if(arg0.getActionCommand().equals(CLEAR_COMMAND)){
            ipText.setText("");
            portText.setText("");
            rPassText.setText("");
        }
    }
}

它显示为

它已经裁剪了一些数据，如何将其完整显示并使小程序也无法调整大小。我尝试过setSize(400, 400);，但它没有帮助内部区域保持不变，外部边界增加

Answer 1

正如我在评论中提到的，这个问题实际上是关于如何在容器中布局组件的。此示例假设您希望向文本字段和标签添加额外的空间。小程序的大小在 HTML 中设置。

200x130 200x150

/*
<applet
  code='FixedSizeLayout'
  width='200'
  height='150'>
</applet>
*/
import java.awt.*;
import javax.swing.*;

public class FixedSizeLayout extends JApplet {
    public void init() {
        SwingUtilities.invokeLater(new Runnable() {
            public void run() {
                initGui();
            }
        });
    }

    private void initGui() {
        JTabbedPane tb = new JTabbedPane();
        tb.addTab("Rcon Details", new RconSection());

        setContentPane(tb);
        validate();
    }
}

class RconSection extends JPanel {
    private static String TEST_COMMAND = "test";
    private static String CLEAR_COMMAND = "clear";
    private static JTextField ipText = new JTextField();
    private static JTextField portText = new JTextField();
    private static JTextField rPassText = new JTextField();

    public RconSection() {
        super(new BorderLayout(3,3));
        JLabel ip = new JLabel("IP");
        JLabel port = new JLabel("Port");
        JLabel rPass = new JLabel("Rcon Password");

        JButton testButton = new JButton("Test");
        testButton.setActionCommand(TEST_COMMAND);

        JButton clearButton = new JButton("Clear");
        clearButton.setActionCommand(CLEAR_COMMAND);

        JPanel panel = new JPanel(new GridLayout(3,2));
        panel.add(ip);
        panel.add(ipText);
        panel.add(port);
        panel.add(portText);
        panel.add(rPass);
        panel.add(rPassText);

        JPanel panel1 = new JPanel(new FlowLayout(FlowLayout.CENTER,5,5));
        panel1.add(testButton);
        panel1.add(clearButton);

        add(panel, BorderLayout.CENTER);
        add(panel1, BorderLayout.SOUTH);
    }

    public static void main(String[] args) {
        SwingUtilities.invokeLater(new Runnable() {
            public void run() {
                Container c = new RconSection();
                JOptionPane.showMessageDialog(null, c);
            }
        });
    }
}