Question

为什么netbeans生成jar不能运行?

init:
deps-clean:
Deleting directory D:\MYJAVA\JavaApplication78\build
Deleting directory D:\MYJAVA\JavaApplication78\dist
clean:
init:
deps-jar:
Created dir: D:\MYJAVA\JavaApplication78\build\classes
Created dir: D:\MYJAVA\JavaApplication78\build\empty
Compiling 1 source file to D:\MYJAVA\JavaApplication78\build\classes
Copying 2 files to D:\MYJAVA\JavaApplication78\build\classes
compile:
Created dir: D:\MYJAVA\JavaApplication78\dist
Building jar: D:\MYJAVA\JavaApplication78\dist\music.jar
Not copying the libraries.
To run this application from the command line without Ant, try:
java -jar "D:\MYJAVA\JavaApplication78\dist\music.jar"
jar:
成功生成（总时间：1 秒）
我点击的是dist文件夹下面的jar文件，所有的都不能运行，我想可能是我的方法不对，或者那里设置错误了，问高手指教下，谢谢!
public static void main(String[] args)
{
MusicFrame musicf = new MusicFrame();
musicf.setLocation(250,250);
musicf.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
musicf.pack();
musicf.setVisible(true);

}

Answer 1

生成的Jar要运行的话，必须要选择一个主类作为其实类的才能运行，而且这个主要要有main方法作为程序的入口的

Answer 2

上面不是写清楚了
To run this application from the command line without Ant, try:
java -jar "D:\MYJAVA\JavaApplication78\dist\music.jar"

Answer 3

把main函数内容贴出来才知道