Question

我将jgoodies-looks-2.5.3.jar添加到我的构建路径并使用

启动它

public static void main(String[] args) {
        EventQueue.invokeLater(new Runnable() {
            public void run() {
                try {
                    UIManager.setLookAndFeel("com.jgoodies.looks.windows.WindowsLookAndFeel");
                    ExpenseManagerGUI frame = new ExpenseManagerGUI();
                } catch (Exception e) {
                    e.printStackTrace();
                }
            }
        });
    }

但是我得到以下错误:(如何解决这个问题？）

Exception in thread "AWT-EventQueue-0" java.lang.NoClassDefFoundError: com/jgoodies/common/base/SystemUtils
    at com.jgoodies.looks.common.ShadowPopupFactory.install(ShadowPopupFactory.java:116)
    at com.jgoodies.looks.windows.WindowsLookAndFeel.initialize(WindowsLookAndFeel.java:199)
    at javax.swing.UIManager.setLookAndFeel(Unknown Source)
    at javax.swing.UIManager.setLookAndFeel(Unknown Source)
    at de.mayerhofersimon.expensemanager.ExpenseManagerGUI$2.run(ExpenseManagerGUI.java:94)
    at java.awt.event.InvocationEvent.dispatch(Unknown Source)
    at java.awt.EventQueue.dispatchEventImpl(Unknown Source)
    at java.awt.EventQueue.access$200(Unknown Source)
    at java.awt.EventQueue$3.run(Unknown Source)
    at java.awt.EventQueue$3.run(Unknown Source)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.security.ProtectionDomain$1.doIntersectionPrivilege(Unknown Source)
    at java.awt.EventQueue.dispatchEvent(Unknown Source)
    at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
    at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
    at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
    at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
    at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
    at java.awt.EventDispatchThread.run(Unknown Source)
Caused by: java.lang.ClassNotFoundException: com.jgoodies.common.base.SystemUtils
    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)
    ... 19 more

Answer 1

看起来非常像你错过了类路径上的jgoodies-common.jar。

您可以从Maven

获取此信息

我强烈建议您为构建使用依赖关系管理系统，以便将来避免出现这些问题

Answer 2

您缺少JGoodies Common库，如图所示on Maven Repository。你可以得到它here。

如何设置JGoodies的外观和感觉？

2 个答案: