Question

我只是提高了我对GUI和GUI和按钮的实现的知识，我遇到了一个小问题。我搜索过这个，甚至比较了按钮代码，但与其他代码相比，我看到的东西似乎没什么不同。当我将html添加到任何按钮时，如果我使用的话，请使用testOne：

JButton testOne = new JButton("<html><b><u>T</u>est<br>1</b></html>");

我当然有一个按钮，但按钮太大而字体很小，而我的其他按钮尺寸正常。任何人都知道为什么？我发布了没有家庭作业标签的代码，因为它不是功课，只是有趣的练习。

public FunProject(){
    super("Fun Project"); //child
    //create layout and get the content pane for content
    contents = getContentPane();
    contents.setLayout(new FlowLayout(FlowLayout.CENTER));
    leftBox = getContentPane();
    leftBox.setLayout(new BoxLayout(leftBox, BoxLayout.X_AXIS));
    //menuBar = new 
    //Create the buttons to use
    JButton testOne = new JButton("Test 1");
    JButton testTwo = new JButton("Test 2");
    JButton testThree = new JButton("Test 3");

另外，对于任何想要散布一点知识的人来说，我该如何堆叠我的按钮呢？现在他们只是在一个没有堆叠的水平面上，但是在我想要的位置（中间到左边）。提前谢谢。

import javax.swing.*;
import javax.swing.event.MenuEvent;
import javax.swing.event.MenuListener;

import java.awt.*;
import java.awt.event.*;

public class FunProject extends JFrame implements ActionListener, KeyListener,     MenuListener{
//Content only visible to me
    private Container contents;
    private Container leftBox;
    private JButton testOne, testTwo, testThree;
    private JMenuBar menuBar;
    private JMenu men, file, edit, exit;
    private JMenuItem fileOpen, fileSave, fileType;
    private JMenuItem editOpen, editSave, editType;


//Constructor
public FunProject(){
    super("Fun Project");
    //create layout and get the content pane for content
    contents = getContentPane();
    contents.setLayout(new FlowLayout(FlowLayout.CENTER));
    leftBox = getContentPane();
    leftBox.setLayout(new BoxLayout(leftBox, BoxLayout.X_AXIS));


    //Key Listener
    this.addKeyListener(this);

    //Creating Menu bar
    menuBar = new JMenuBar();

    //Adding header to menuBar
    men = new JMenu("Test Menu");
    men.addMenuListener(this);
    menuBar.add(men);

    //Adding exit to menuBar
    exit = new JMenu("Exit Menu");
    exit.setMnemonic(KeyEvent.VK_X);
    exit.addMenuListener(this);
    menuBar.add(exit);

    //Add submenu
    file = new JMenu("FILE");
    file.addMenuListener(this);
    men.add(file);

    edit = new JMenu("EDIT");
    edit.addMenuListener(this);
    men.add(edit);

    //Add item to submenu FILE
    fileOpen = new JMenuItem("Open a file");
    fileOpen.addActionListener(this);
    file.add(fileOpen);

    fileSave = new JMenuItem("Save a file");
    fileSave.addActionListener(this);
    file.add(fileSave);

    fileType = new JMenuItem("File type");
    fileType.addActionListener(this);
    file.add(fileType);

    //Add item to submenu EDIT
    editOpen = new JMenuItem("Open a file");
    editOpen.addActionListener(this);
    edit.add(editOpen);

    editSave = new JMenuItem("Save a file");
    editSave.addActionListener(this);
    edit.add(editSave);

    edit = new JMenuItem("File type");
    editType.addActionListener(this);
    edit.add(editType);

    //Add menu bar
    this.setJMenuBar(menuBar);

    //Create the buttons to use
    JButton testOne = new JButton("Test 1"); 
    JButton testTwo = new JButton("Test 2");
    JButton testThree = new JButton("Test 3");
    //Button modifications
    testOne.setPreferredSize(new Dimension(100, 100));
    //Add buttons and such to the leftBox (frame > pane)
    leftBox.add(testOne);
    leftBox.add(testTwo);
    leftBox.add(testThree);

    //Tell the program what Listener will handle events for the button or whatever you
    //are implementing
    testOne.addActionListener(this);
    testTwo.addActionListener(this);
    testThree.addActionListener(this);

    //Set size and visibility to display content and color
    setSize(400,300);
    setVisible(true);

}
public static void main(String[] args){
    FunProject fp = new FunProject();
    fp.setDefaultCloseOperation(EXIT_ON_CLOSE);
}

我正在弄乱菜单（所以忽略菜单代码）以及它们的全部内容。这是我以后更好地学习它的时间。

Answer 1

1）尝试使用

h1标签 - ＆gt; JButton testOne = new JButton("<html><h1>Test 1</html>");

用于增加大小或字体使用标记以更改字体的颜色或大小。

2）有些时候它取决于您使用的布局检查出来

3）尝试ButtonObject.setBounds（）;

添加html时Java Button大小会发生变化

1 个答案: