资讯

csdn9 年

异常处理，Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException

at javax.swing.plaf.basic.BasicMenuItemUI.doClick(BasicMenuItemUI.java:1225) at javax.swing.plaf.basic.BasicMenuItemUI$Handler.mouseReleased(BasicMenuItemUI.java:1266 ...
csdn16 年

异常：Exception in thread "AWT-EventQueue-0" java.lang.ClassCastException: com.wsb.pub ...

用netbeans 6.5时，遇到一个问题，没有解决。 Exception in thread "AWT-EventQueue-0" java.lang.ClassCastException: com.wsb.pub.Item cannot be cast to java ...