好吧,所以,出于某种原因,我的.jar即使在eclipse中执行也不会执行。继承我的代码,它不是最好的,但我正在试验。我需要一些帮助才能让它在eclipse之外作为.jar文件执行。
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.util.Calendar; // only need this one class
import javax.swing.*;
////////////////////////////////////////////////////////////////// TextClock
public class CopyOftheclock {
//================================================================= main
public static void main(String[] args) {
JFrame clock = new TextClockWindow();
clock.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
clock.setVisible(true);
}//end main
}//endclass TextClock
@SuppressWarnings("serial")
//////////////////////////////////////////////////////////// TextClockWindow
class TextClockWindow extends JFrame {
//=================================================== instance variables
private JTextField timeField; // set by timer listener
//========================================================== constructor
public TextClockWindow() {
// Build the GUI - only one panel
timeField = new JTextField(7);
timeField.setFont(new Font("sansserif", Font.PLAIN, 48));
Container content = this.getContentPane();
content.setLayout(new FlowLayout());
content.add(timeField);
this.setTitle("Norway");
this.pack();
// Create a 1-second timer and action listener for it.
// Specify package because there are two Timer classes
javax.swing.Timer t = new javax.swing.Timer(1000,
new ActionListener() {
public void actionPerformed(ActionEvent e) {
String a = "";
Calendar now = Calendar.getInstance();
int h = now.get(Calendar.HOUR_OF_DAY);
if (h==24)
{
h=8;
a = "A.M";
}
if (h==1)
{
h=9;
a = "A.M";
}
if (h==2)
{
h=10;
a = "A.M";
}
if (h==3)
{
h=11;
a = "A.M";
}
if (h==4)
{
h=12;
a = "P.M";
}
if (h==5)
{
h=1;
a = "P.M";
}
if (h==6)
{
h=2;
a = "P.M";
}
if (h==7)
{
h=3;
a = "P.M";
}
if (h==8)
{
h=4;
a = "P.M";
}
if (h==9)
{
h=5;
a = "P.M";
}
if (h==10)
{
h=6;
a = "P.M";
}
if (h==11)
{
h=7;
a = "P.M";
}
if (h==12)
{
h=8;
a = "P.M";
}
if (h==13)
{
h=9;
a = "P.M";
}
if (h==14)
{
h=10;
a = "P.M";
}
if (h==15)
{
h=11;
a = "P.M";
}
if (h==16)
{
h=12;
a = "P.M";
}
if (h==17)
{
h=1;
a = "A.M";
}
if (h==18)
{
h=2;
a = "A.M";
}
if (h==19)
{
h=3;
a = "A.M";
}
if (h==20)
{
h=4;
a = "A.M";
}
if (h==21)
{
h=5;
a = "A.M";
}
if (h==22)
{
h=6;
a = "A.M";
}
if (h==23)
{
h=7;
a = "A.M";
}
int m = now.get(Calendar.MINUTE);
int s = now.get(Calendar.SECOND);
timeField.setText("" + h + ":" + m + ":" + s + " " + a);
}
});
t.start(); // Start the timer
}//end constructor
}//endclass TextClock
答案 0 :(得分:2)
如果您成功制作了一个罐子,那么请按照下一步操作。
java [-options] -jar jarfile [args...]
注意:其中[-options]
是JVM的参数,[args...]
是jar的
此外,只有当你的jar清单有一个主类的条目时才会有效:
Manifest-Version: 1.0
Class-Path: .
Main-Class: CopyOftheclock
像这样设置你的类路径:
set classpath=clock.jar;.;%classpath%
之后:
java [-options] class [args...]
class
是使用main方法的类。 class
也应该是完全合格的,即如果它在package a.b.c
,则该类应为a.b.c.CopyOftheclock
。此外,您应该从最顶层的包父进行java命令。
我不确定基于* nix的操作系统,但在Windows上只需右键单击jar并选择使用java
或javaw
运行。但是为此,清单文件必须具有main class
条目,否则它将失败。
注意:有关java -help
[options]