Eclipse 找不到 JFace 中的主类？
我正在阅读 Manning Press 出版的《SWT/JFace IN ACTION》一书。
当我添加 JFace 时，Eclipse 由于某种原因无法找到主类，尽管它显然存在。
这是代码
package com.swtjface.ChTwo;
import org.eclipse.jface.window.*;
import org.eclipse.swt.*;
import org.eclipse.swt.widgets.*;
public class HelloSWT_JFace extends ApplicationWindow{
/**
* @param args
*/
public HelloSWT_JFace(){
super(null);
}
protected Control createContents(Composite parent){
Text helloText = new Text(parent, SWT.CENTER);
helloText.setText("Hello SWT and JFace!");
parent.pack();
return parent;
}
public static void main(String[] args) {
// TODO Auto-generated method stub
HelloSWT_JFace awin = new HelloSWT_JFace();
awin.setBlockOnOpen(true);
awin.open();
Display.getCurrent().dispose();
}
}
我从 Eclipse 收到的拒绝消息是...
Could not find the main class: com.swtjface.ChTwo.HelloSWT_JFace.
Program will exit.
这是例外...
java.lang.NoClassDefFoundError: org/eclipse/core/runtime/IProgressMonitor
Caused by: java.lang.ClassNotFoundException: org.eclipse.core.runtime.IProgressMonitor
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
Exception in thread "main"
I'm working though a book SWT/JFace IN ACTION by Manning Press.
When I added JFace, Eclipse for some reason could not find the main class though it is plainly present.
Here is the code
package com.swtjface.ChTwo;
import org.eclipse.jface.window.*;
import org.eclipse.swt.*;
import org.eclipse.swt.widgets.*;
public class HelloSWT_JFace extends ApplicationWindow{
/**
* @param args
*/
public HelloSWT_JFace(){
super(null);
}
protected Control createContents(Composite parent){
Text helloText = new Text(parent, SWT.CENTER);
helloText.setText("Hello SWT and JFace!");
parent.pack();
return parent;
}
public static void main(String[] args) {
// TODO Auto-generated method stub
HelloSWT_JFace awin = new HelloSWT_JFace();
awin.setBlockOnOpen(true);
awin.open();
Display.getCurrent().dispose();
}
}
The reject message I get from Eclipse is...
Could not find the main class: com.swtjface.ChTwo.HelloSWT_JFace.
Program will exit.
Here is the exception...
java.lang.NoClassDefFoundError: org/eclipse/core/runtime/IProgressMonitor
Caused by: java.lang.ClassNotFoundException: org.eclipse.core.runtime.IProgressMonitor
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
Exception in thread "main"
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评论（2）
您至少还需要 2 个 jar 才能使用 JFace：
请参阅 在 Eclipse 平台之外使用 JFace 了解更多详细信息。
You need at least 2 more jars to use JFace:
See Using JFace outside the Eclipse platform for more details.
您需要为“org.eclipse.core.runtime.IProgressMonitor 类”添加 jar 文件
检查 此链接。
You need to add jar file for "org.eclipse.core.runtime.IProgressMonitor class"
Check this link.