NoClassDefFoundError上的Try/Catch中的类退出

Question

我不想尝试加载一个类,如果这个类无法加载继续我的程序.

protected void checkClass(){
        classChecked = false;
        try {
        ClassLoader cl = Thread.currentThread().getContextClassLoader();
        Class<?> compiledClass = cl.loadClass(sTestclass); // << EXCEPTIOn lINE
            cRun = compiledClass;           
        classChecked = true;    
        } catch (Exception e) {         
            e.printStackTrace();
            System.err.println("- Testclass not found!");
            System.err.println("- Make sure you typed the package name\n and the Class name correctly!");
        }       
    }

但相反,整个程序退出了:

Exception in thread "main" java.lang.NoClassDefFoundError: data/testcases/comman
do/ctest (wrong name: data/testcases/commando/CTest)
        at java.lang.ClassLoader.defineClass1(Native Method)
        at java.lang.ClassLoader.defineClassCond(ClassLoader.java:631)
        at java.lang.ClassLoader.defineClass(ClassLoader.java:615)
        at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:14
1)
        at java.net.URLClassLoader.defineClass(URLClassLoader.java:283)
        at java.net.URLClassLoader.access$000(URLClassLoader.java:58)
        at java.net.URLClassLoader$1.run(URLClassLoader.java:197)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
        at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
        at cmd.TwCmd.checkClass(TwCmd.java:214)
        at cmd.TwCmd.askForTestcase(TwCmd.java:107)
        at cmd.TwCmd.anotherTestcase(TwCmd.java:146)
        at cmd.TwCmd.executeInteractiveTw(TwCmd.java:85)
        at cmd.TwCmd.runThrough(TwCmd.java:60)
        at cmd.TwCmd.main(TwCmd.java:260)

我已经把它包围了Try/Catch但仍然整个程序退出这个错误？

Answer 1

NoClassDefFoundError它不是一个Exception,它来源于Error.

Throwable如果你想抓住它们,请尝试捕捉.

Answer 2

你看到了Error,而不是Exception.赶上NoClassDefFoundError并且您应该能够在catch块中处理它并继续.

(java.lang.NoClassDefFoundError不是其子类java.lang.Exception)