Netbeans GUI 编辑器生成自己难以理解的代码 [英] Netbeans GUI editor generating its own incomprehensible code
问题描述
在 netbeans 中创建新项目时,如果我选择 JAVA 桌面应用程序,它会创建一些代码,我完全不认为这是我在 Swing 中学到的.
When creating a new project in netbeans, if i select JAVA Desktop application, it creates some code which I DO NOT RECOGNISE AT ALL as what i had learnt in swing.
它导入包,例如:
org.jdesktop.application.SingleFrameApplication;
此外,main() 的声明如下所示:
also, the declaration for main() looks like this :
public static void main(String[] args) {
launch(DesktopApplication2.class, args);
}
这对我对 JFrame、JPanel 等的了解确实没有任何意义.
This really does not make any sense to my knowledge of JFrame, JPanel etc..
如果我尝试从头开始编写 netbeans 应用程序,我可以编写自己的 Swing 应用程序,但我找不到 GUI 编辑器.
If i try to code a netbeans application from scratch, i can write my own swing app BUT I CANNOT FIND THE GUI EDITOR.
- 从头开始创建 Java 应用程序时如何带上 GUI 编辑器?
- 谁能向我解释这个 org.jdesktop.application.SingleFrameApplication 和其他类?
请帮忙.这真是令人沮丧.
Please help. This is really frustrating.
推荐答案
您可能无意中选择了 Java 桌面应用程序
基于 Swing 应用程序框架 (JSR 296) 创建桌面应用程序的框架.此模板提供基本的应用程序基础结构,例如菜单栏、窗口状态的持久化和状态栏.使用此模板,您还可以生成代码来为数据库表创建 GUI 界面.
Creates a skeleton of a desktop application based on the Swing Application Framework (JSR 296). This template provides basic application infrastructure such as a menu bar, persisting of window state, and status bar. With this template, you can also generate code to create a GUI interface for a database table.
而不是 Java 应用程序
在标准 IDE 项目中创建新的 Java SE 应用程序.也可以在项目中生成主类.标准项目使用 IDE 生成的 Ant 构建脚本来构建、运行和调试您的项目.
Creates a new Java SE application in a standard IDE project. You can also generate a main class in the project. Standard projects use an IDE-generated Ant build script to build, run, and debug your project.
附录:使用<代码>文件>新建文件Java GUI Forms 添加高级容器,例如一个封闭的 JPanel
,可以从 main()
的 run()
方法实例化.
Addendum: Use File > New File > Java GUI Forms
to add high-level containers, e.g. an enclosing JPanel
, that can be instantiated from main()
's run()
method.
例如,Main.main()
:
package temp;
import java.awt.EventQueue;
import javax.swing.JFrame;
public class Main {
public static void main(String[] args) {
EventQueue.invokeLater(new Runnable() {
@Override
public void run() {
JFrame f = new JFrame();
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
f.add(new NewJPanel());
f.pack();
f.setVisible(true);
}
});
}
}
还有一个内置在 GUI 编辑器中的 NewJPanel
(注意生成的代码"):
And a NewJPanel
built in the GUI editor (note "Generated Code"):
package temp;
public class NewJPanel extends javax.swing.JPanel {
/** Creates new form NewJPanel */
public NewJPanel() {
initComponents();
}
@SuppressWarnings("unchecked")
// <editor-fold defaultstate="collapsed" desc="Generated Code">
private void initComponents() {
jLabel1 = new javax.swing.JLabel();
jLabel1.setText("Hello, world!");
org.jdesktop.layout.GroupLayout layout =
new org.jdesktop.layout.GroupLayout(this);
this.setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
.add(layout.createSequentialGroup()
.add(163, 163, 163)
.add(jLabel1)
.addContainerGap(157, Short.MAX_VALUE))
);
layout.setVerticalGroup(
layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
.add(layout.createSequentialGroup()
.add(113, 113, 113)
.add(jLabel1)
.addContainerGap(171, Short.MAX_VALUE))
);
}// </editor-fold>
// Variables declaration - do not modify
private javax.swing.JLabel jLabel1;
// End of variables declaration
}
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