小编use*_*641的帖子

jmockit无法在eclipse中初始化:java.lang.IllegalStateException:在JDK 9上运行需要-javaagent:/jmockit-1.n.jar或-Djdk.attach.allowAttachSelf

如果我添加-Djdk.attach.allowAttachSelfVM参数,它可以正常工作.

为什么我需要添加该参数？jmockit并不是说在JDK 9上运行时是必需的.是的,JRE系统库指向JDK,是的,jmockit jar按照外部库的顺序高于junit.

版本:JUnit 4.12,Java jdk 9.0.1,jmockit 1.37,hamcrest core 1.3

java.base上的java.lang.ExceptionInInitializerError(testClass.java:20)java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl) .java:62)在org的java.base/java.lang.reflect.Method.invoke(Method.java:564)的java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43).在org.junit.runners.model.FrameworkMethod.invokeExplosively的org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)中的junit.runners.model.FrameworkMethod $ 1.runReflectiveCall(FrameworkMethod.java:50) (FrameworkMethod.java:47)org.junit上的org.junit.runners.Statements.InvokeMethod.evaluate(InvokeMethod.java:17)org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325). runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRu)nner.java:57)org.junit.runners.ParentRunner $ 3.run(ParentRunner.java:290)org.junit.runners.ParentRunner $ 1.schedule(ParentRunner.java:71)org.junit.runners.ParentRunner .runChildren(ParentRunner.java:288)位于org.junit的org.junit.runners.rarentRunner.access $ 000(ParentRunner.java:58)org.junit.runners.ParentRunner $ 2.evaluate(ParentRunner.java:268). runners.ParentRunner.run(ParentRunner.java:363)位于org.eclipse.jdt.internal.junit.runner.TestExecution的org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:86).运行(TestExecution.java:38)org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:539)org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner. java:761)org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:461)org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:207)引起:java.lang.IllegalStateException:运行 在JDK 9上需要在mockit.internal.startup.AgentLoader.loadAgent的mockit.internal.startup.AgentLoader.attachToRunningVM(AgentLoader.java:155)中使用-javaagent:/jmockit-1.n.jar或-Djdk.attach.allowAttachSelf (AgentLoader.java:60)at mockit.internal.startup.Startup.verifyInitialization(Startup.java:137)at mockit.Invocations.(Invocations.java:26)... 24更多

using namespace std;

class A {};

class B {};

class C : public A {
    public:
    C(){ b = new B();}
    B* b;
    ~C(){
        printf("in destructor\n");
        delete b;
    }
};

void doSomething(A&aref)
{
    C c = (C &) aref;
    c.b = new B();
    int i;
}

int main()
{      
    A * a;

    a = new C();
    printf("Line 1\n");
    doSomething(*a);
    printf("Line 2\n");

    delete(a);

    return 0;
}

输出为：

Line 1
in destructor
Line 2

尝试删除delete(a)并获得相同的结果。

为什么我看不到析构函数两次调用？我希望可以在doSomething函数末尾和delete调用时调用它。 …