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一个最小的Java程序应该是什么样子?_Java_Nosuchmethoderror - Fatal编程技术网

一个最小的Java程序应该是什么样子?

一个最小的Java程序应该是什么样子?,java,nosuchmethoderror,Java,Nosuchmethoderror,我编写了以下代码: import java.awt.*; import java.awt.event.*; class Party { public void buildInvite() { Frame f = new Frame(); Label l = new Label("Party at Tim's"); Button b = new Button("You bet"); Button c = new Button

我编写了以下代码:

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

class Party {
    public void buildInvite() {
        Frame f = new Frame();
        Label l = new Label("Party at Tim's");
        Button b = new Button("You bet");
        Button c = new Button("Shoot me");
        Panel p = new Panel();
        p.add(l);
    } //more code here...
}
我一直收到以下错误:
线程“main”java.lang.NoSuchMethodError中的异常:main

我试图向代码中添加一个额外的
main(String[]args)
,但仍然会出现相同的错误


另外,我应该在代码中添加什么,以及它应该放在布局中的什么位置?

确保您的
main
方法如下所示:

public static void main(String[] args) {
   ...
}

使用Java和Swing的初学者应该查看。以下是他们的:


因为您声称自己是绝对的noob,所以请确保在发布java之前使用javac filename.java编译java类filename@Jagat是的,我说对了。哈哈,谢谢,谢谢。我一定会看一看Oracle教程。@Craig:有很多好的示例代码可以运行。另外,如果您想要一本deadtree书籍,那么核心Java()是Swing的良好起点。
package start;

import javax.swing.*;        

public class HelloWorldSwing {
    /**
     * Create the GUI and show it.  For thread safety,
     * this method should be invoked from the
     * event-dispatching thread.
     */
    private static void createAndShowGUI() {
        //Create and set up the window.
        JFrame frame = new JFrame("HelloWorldSwing");
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

        //Add the ubiquitous "Hello World" label.
        JLabel label = new JLabel("Hello World");
        frame.getContentPane().add(label);

        //Display the window.
        frame.pack();
        frame.setVisible(true);
    }

    public static void main(String[] args) {
        //Schedule a job for the event-dispatching thread:
        //creating and showing this application's GUI.
        javax.swing.SwingUtilities.invokeLater(new Runnable() {
            public void run() {
                createAndShowGUI();
            }});}}