Java 从jframe调用japplet
我手动设计了JApplet类Java 从jframe调用japplet,java,swing,jbutton,japplet,Java,Swing,Jbutton,Japplet,我手动设计了JApplet类,,并使用Netbean Builder设计了主类,默认情况下,该类将自动生成代码。那么如何从JFrame运行JApplet类。 此JApplet代码 现在的问题是按钮没有出现 已更新 import java.awt.BorderLayout; import java.awt.Dimension; import java.awt.Toolkit; import java.awt.event.ActionEvent; import javax.swing.ImageIc
,
,并使用Netbean Builder
设计了主类,默认情况下,该类将自动生成代码。那么如何从JFrame运行JApplet类。此JApplet代码
现在的问题是按钮没有出现
已更新
import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.Toolkit;
import java.awt.event.ActionEvent;
import javax.swing.ImageIcon;
import javax.swing.JApplet;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTable;
public class GalaxyTable2 extends JFrame{ //JApplet
private static final int PREF_W = 700;
private static final int PREF_H = 600;
String[] columnNames
= {"Phone Name", "Brief Description", "Picture", "price",
"Buy"};
// Create image icons
ImageIcon Image1 = new ImageIcon(
getClass().getResource("s1.png"));
ImageIcon Image2 = new ImageIcon(
getClass().getResource("s2.png"));
ImageIcon Image3 = new ImageIcon(
getClass().getResource("s3.png"));
ImageIcon Image4 = new ImageIcon(
getClass().getResource("s4.png"));
ImageIcon Image5 = new ImageIcon(
getClass().getResource("note.png"));
ImageIcon Image6 = new ImageIcon(
getClass().getResource("note2.png"));
ImageIcon Image7 = new ImageIcon(
getClass().getResource("note3.png"));
Object[][] rowData = {
{"Galaxy S", "3G Support,CPU 1GHz",
Image1, 120, false},
{"Galaxy S II", "3G Support,CPU 1.2GHz",
Image2, 170, false},
{"Galaxy S III", "3G Support,CPU 1.4GHz",
Image3, 205, false},
{"Galaxy S4", "4G Support,CPU 1.6GHz",
Image4, 230, false},
{"Galaxy Note", "4G Support,CPU 1.4GHz",
Image5, 190, false},
{"Galaxy Note2 II", "4G Support,CPU 1.6GHz",
Image6, 190, false},
{"Galaxy Note 3", "4G Support,CPU 2.3GHz",
Image7, 260, false},};
MyTable ss = new MyTable(
rowData, columnNames);
// Create a table
JTable jTable1 = new JTable(ss);
public GalaxyTable2() {
jTable1.setRowHeight(70);
add(new JScrollPane(jTable1),
BorderLayout.CENTER);
JFrame f = new JFrame();
this.setTitle("Galaxy Phones");
JButton button = new JButton("Home");
button.setSize(new Dimension(200, 500));
button.setLocation(400, 500);
f.getContentPane().add(button);
JButton button2 = new JButton("Confirm");
button2.setSize(new Dimension(100, 500));
button2.setLocation(100, 300);
// button2.addActionListener(null);
f.getContentPane().add(button2);
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
this.setSize(800, 700);
this.setLocation(300, 0);
}
@Override
public Dimension getPreferredSize() {
return new Dimension(PREF_W, PREF_H);
}
public void actionPerformed(ActionEvent e) {
new AMainFrame7().setVisible(true);
}
public static void main(String[] args) {
GalaxyTable2 b=new GalaxyTable2();
/*
JFrame f = new JFrame();
JButton button = new JButton("Home");
button.setSize(new Dimension(100, 50));
button.setLocation(400, 500);
f.getContentPane().add(button);
JButton button2 = new JButton("Confirm");
button2.setSize(new Dimension(100, 50));
button2.setLocation(200, 500);
button2.addActionListener(null);
f.getContentPane().add(button2);
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
f.setTitle("Galaxy Phones");
f.setSize(500, 500);
f.getContentPane().add(f, button2);
applet.init();
applet.start();*/
b.pack();
Dimension d = Toolkit.getDefaultToolkit().getScreenSize();
b.setLocation((d.width - b.getSize().width) / 2,
(d.height - b.getSize().height) / 2);
b.setVisible(true);
}
}
主类中的此操作代码private void jButton4ActionPerformed(java.awt.event.ActionEvent evt) {
new GalaxyTable().setVisible(true);
dispose();
}
首先,applet设计为在浏览器(或applet查看器)的上下文中运行,而不是真正设计为添加到其他容器中 从技术上讲,您可以像任何其他组件一样将小程序添加到框架中,但就个人而言,我不会。小程序希望有更多信息可供使用,以使其能够充分工作 相反,我会将所有“应用程序”内容移动到一个单独的组件,例如
JPanel
,然后根据需要在applet或框架之间移动它
ps-您可以使用f.setLocationRelativeTo(null)
在屏幕上居中显示窗口;)
已更新
import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.Toolkit;
import java.awt.event.ActionEvent;
import javax.swing.ImageIcon;
import javax.swing.JApplet;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTable;
public class GalaxyTable2 extends JFrame{ //JApplet
private static final int PREF_W = 700;
private static final int PREF_H = 600;
String[] columnNames
= {"Phone Name", "Brief Description", "Picture", "price",
"Buy"};
// Create image icons
ImageIcon Image1 = new ImageIcon(
getClass().getResource("s1.png"));
ImageIcon Image2 = new ImageIcon(
getClass().getResource("s2.png"));
ImageIcon Image3 = new ImageIcon(
getClass().getResource("s3.png"));
ImageIcon Image4 = new ImageIcon(
getClass().getResource("s4.png"));
ImageIcon Image5 = new ImageIcon(
getClass().getResource("note.png"));
ImageIcon Image6 = new ImageIcon(
getClass().getResource("note2.png"));
ImageIcon Image7 = new ImageIcon(
getClass().getResource("note3.png"));
Object[][] rowData = {
{"Galaxy S", "3G Support,CPU 1GHz",
Image1, 120, false},
{"Galaxy S II", "3G Support,CPU 1.2GHz",
Image2, 170, false},
{"Galaxy S III", "3G Support,CPU 1.4GHz",
Image3, 205, false},
{"Galaxy S4", "4G Support,CPU 1.6GHz",
Image4, 230, false},
{"Galaxy Note", "4G Support,CPU 1.4GHz",
Image5, 190, false},
{"Galaxy Note2 II", "4G Support,CPU 1.6GHz",
Image6, 190, false},
{"Galaxy Note 3", "4G Support,CPU 2.3GHz",
Image7, 260, false},};
MyTable ss = new MyTable(
rowData, columnNames);
// Create a table
JTable jTable1 = new JTable(ss);
public GalaxyTable2() {
jTable1.setRowHeight(70);
add(new JScrollPane(jTable1),
BorderLayout.CENTER);
JFrame f = new JFrame();
this.setTitle("Galaxy Phones");
JButton button = new JButton("Home");
button.setSize(new Dimension(200, 500));
button.setLocation(400, 500);
f.getContentPane().add(button);
JButton button2 = new JButton("Confirm");
button2.setSize(new Dimension(100, 500));
button2.setLocation(100, 300);
// button2.addActionListener(null);
f.getContentPane().add(button2);
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
this.setSize(800, 700);
this.setLocation(300, 0);
}
@Override
public Dimension getPreferredSize() {
return new Dimension(PREF_W, PREF_H);
}
public void actionPerformed(ActionEvent e) {
new AMainFrame7().setVisible(true);
}
public static void main(String[] args) {
GalaxyTable2 b=new GalaxyTable2();
/*
JFrame f = new JFrame();
JButton button = new JButton("Home");
button.setSize(new Dimension(100, 50));
button.setLocation(400, 500);
f.getContentPane().add(button);
JButton button2 = new JButton("Confirm");
button2.setSize(new Dimension(100, 50));
button2.setLocation(200, 500);
button2.addActionListener(null);
f.getContentPane().add(button2);
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
f.setTitle("Galaxy Phones");
f.setSize(500, 500);
f.getContentPane().add(f, button2);
applet.init();
applet.start();*/
b.pack();
Dimension d = Toolkit.getDefaultToolkit().getScreenSize();
b.setLocation((d.width - b.getSize().width) / 2,
(d.height - b.getSize().height) / 2);
b.setVisible(true);
}
}
你需要回到基础上来。除非你绝对必须有一个,否则在你了解Swing的基本知识之前,不要使用小程序,以此类推
在GalzyTable2
的构造函数中,您正在执行
JApplet app = new JApplet();
add(app);
app.init();
app.start();
…为什么要将另一个小程序添加到小程序
举个例子
在main
方法中,您试图将JFrame
的实例添加到自身中
f.getContentPane().add(f, button2);
相反,您可以自己创建一个类,该类从类似JPanel
的东西扩展而来,将您的UI逻辑添加到该类中,如果需要,可以使用复合组件
然后,将此面板添加到所需的顶级容器中
花点时间通读一遍
用示例更新
import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.EventQueue;
import java.awt.event.ActionEvent;
import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.UIManager;
import javax.swing.UnsupportedLookAndFeelException;
public class GalaxyTable2 extends JPanel {
private static final int PREF_W = 700;
private static final int PREF_H = 600;
String[] columnNames
= {"Phone Name", "Brief Description", "Picture", "price",
"Buy"};
// Create image icons
ImageIcon Image1 = new ImageIcon(
getClass().getResource("s1.png"));
ImageIcon Image2 = new ImageIcon(
getClass().getResource("s2.png"));
ImageIcon Image3 = new ImageIcon(
getClass().getResource("s3.png"));
ImageIcon Image4 = new ImageIcon(
getClass().getResource("s4.png"));
ImageIcon Image5 = new ImageIcon(
getClass().getResource("note.png"));
ImageIcon Image6 = new ImageIcon(
getClass().getResource("note2.png"));
ImageIcon Image7 = new ImageIcon(
getClass().getResource("note3.png"));
Object[][] rowData = {
{"Galaxy S", "3G Support,CPU 1GHz",
Image1, 120, false},
{"Galaxy S II", "3G Support,CPU 1.2GHz",
Image2, 170, false},
{"Galaxy S III", "3G Support,CPU 1.4GHz",
Image3, 205, false},
{"Galaxy S4", "4G Support,CPU 1.6GHz",
Image4, 230, false},
{"Galaxy Note", "4G Support,CPU 1.4GHz",
Image5, 190, false},
{"Galaxy Note2 II", "4G Support,CPU 1.6GHz",
Image6, 190, false},
{"Galaxy Note 3", "4G Support,CPU 2.3GHz",
Image7, 260, false},};
MyTable ss = new MyTable(
rowData, columnNames);
// Create a table
JTable jTable1 = new JTable(ss);
public GalaxyTable2() {
jTable1.setRowHeight(70);
add(new JScrollPane(jTable1),
BorderLayout.CENTER);
JPanel buttons = new JPanel();
JButton button = new JButton("Home");
buttons.add(button);
JButton button2 = new JButton("Confirm");
buttons.add(button2);
add(buttons, BorderLayout.SOUTH);
}
@Override
public Dimension getPreferredSize() {
return new Dimension(PREF_W, PREF_H);
}
public void actionPerformed(ActionEvent e) {
new AMainFrame7().setVisible(true);
}
public static void main(String[] args) {
EventQueue.invokeLater(new Runnable() {
@Override
public void run() {
try {
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
} catch (ClassNotFoundException | InstantiationException | IllegalAccessException | UnsupportedLookAndFeelException ex) {
ex.printStackTrace();
}
JFrame frame = new JFrame("Testing");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.add(new GalaxyTable2());
frame.pack();
frame.setLocationRelativeTo(null);
frame.setVisible(true);
}
});
}
}
您似乎还不了解如何使用布局管理器
花点时间通读一遍,然后嗯,您确定要在创建小程序后调用
dispose()
?另外,您没有将小程序添加到任何内容中…我使用了dispose
在打开JApplet类(即GalaxyTable)之后关闭main类。我现在能做什么?我使用了f.setLocationRelativeTo(null)代码>问题仍然存在。当我调用“无窗口显示”时。@lovingjava您需要将小程序添加到框架中,并且至少不要关闭框架。这不是我的观点,我的观点是,您首先不应该尝试这样做……我编辑过,现在工作正常,但仍然存在一个问题,即按钮没有显示。请参阅更新的代码。在GalaxyTable2
的构造函数中,您创建了第二个帧,但是GalaxyTable2
已经从JFrame
扩展…使GalaxyTable2
从JPanel
扩展,在main
方法中,创建JFrame的实例并将您的面板添加到其中。。。