无法编译简单的JFACE程序; java.lang.NoClassDefFoundError

Question

我正在尝试运行一个非常简单的JFace程序：

import org.eclipse.jface.window.*;
import org.eclipse.swt.*;
import org.eclipse.swt.widgets.*;

public class HelloSWT_JFace extends ApplicationWindow{

    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) {
        HelloSWT_JFace awin = new HelloSWT_JFace();
        awin.setBlockOnOpen(true);
        awin.open();
        Display.getCurrent().dispose();

    }

}

据我所知，所有库都已安装，Eclipse中的代码没有给我任何错误。尽管如此，当我跑步时我得到了

和长错误报告：

Exception in thread "main" java.lang.NoClassDefFoundError: org/eclipse/core/runtime/IProgressMonitor
    at java.lang.Class.getDeclaredMethods0(Native Method)
    at java.lang.Class.privateGetDeclaredMethods(Unknown Source)
    at java.lang.Class.getMethod0(Unknown Source)
    at java.lang.Class.getMethod(Unknown Source)
    at sun.launcher.LauncherHelper.getMainMethod(Unknown Source)
    at sun.launcher.LauncherHelper.checkAndLoadMain(Unknown Source)
Caused by: java.lang.ClassNotFoundException: org.eclipse.core.runtime.IProgressMonitor
    at java.net.URLClassLoader$1.run(Unknown Source)
    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)
    ... 6 more

有谁知道造成这种情况的原因是什么？

请注意;我查看了THIS问题并按照解决方案进行了操作，但安装Equinox插件无法正常工作。

Answer 1

感谢Baz提供的链接，我找到了解决方案，确保添加了所有必需的Jars（我错过了一对）。

必要的罐子是：

org.eclipse.core.commands_<version info>.jar
org.eclipse.equinox.common_<version info>.jar
org.eclipse.jface_<version info>.jar
org.eclipse.osgi_<version info>.jar
org.eclipse.ui.workbench_<version info>.jar 

更多信息可以在Baz提供的链接中找到： "Identify the Required External JAR Files for SWT and JFace"