publicbooleanequals(Object anObject){if(this==anObject){returntrue;}if(anObjectinstanceofString){String anotherString=(String)anObject;int n=value.length;if(n==anotherString.value.length){char v1[]=value;char v2[]=anotherString.value;int i=0;while(n--!=0){if(v1[i]!=v2[i])returnfa...
public class TestTypeVariableBean<K extends Number, T> { //K有指定了上边界Number K key; //T没有指定上边界,其默认上边界为Object T value; public static void main(String[] args){ Type[] types = TestTypeVariableBean.class.getTypeParameters(); for (Type type : types){ TypeVariable t = (...
}@TestpublicvoidtestIntType()throwsNoSuchFieldException { Class\<?\> clazz = TestParameterizedType.class;Fieldfield=clazz.getDeclaredField("field");// 此处获取到字段的实际Class类型Class\<?\> clazzType = field.getType(); System.out.println("Field type: "+ clazzType.getName());// 此处获取到...
Type(); // interface List<E> 的泛型类型E被T,具体化,因此其被识别为 TypeVariable TypeVariable variable1 = (TypeVariable)arrayType.getActualTypeArguments()[0]; // 2 ParameterizedType type = (ParameterizedType)SubTest.class.getGenericSuperclass(); TypeVariable variable2 = (TypeVariable)type.get...
在GenericClassTest中将GenericClass的泛型定义为Integer类型,并重写了 get 和 set 方法,因为存在类型擦除,父类GenericClass的泛型被擦除了。 用javap -c查看一下GenericClass编译后的字节码 可以看到类型擦除后泛型变为了Object。那么GenericClass也就变为了 ...
public void testSub(){ Calculator c = new Calculator(); int result = c.sub(1,2); Assert.assertEquals(-1,result); } 1. 2. 3. 4. 5. 6. 补充 @Before:修饰的方法会在测试方法之前被自动执行 @After:修饰的方法会在测试方法执行之后自动被执行 ...
public Object invoke(Object proxy,Method method,Object[] args) throws Throwable{ Object temp = method.invoke(this.obj, args); return temp; } } public class TestReflect { public static void main(String[] args) { // TODO Auto-generated method stub ...
assertNotSame(Object expected, Object actual, String message) 实际结果必须和预期结果不是同一个对象 比如多例的测试 assertAll(Executable… executables) 所有的 Executable 都执行且不抛出异常 assertThrows(ClassexpectedType, Executable executable, String message) 必须抛出异常 assertDoesNotThrow(Executable executa...
TestAll); Object obj2 = TestAll.class.getClassLoader().loadClass("xiao.TestAll").newInstance(); System.out.println(obj2 instanceof xiao.TestAll); }}falsetrue 双亲委派模型 启动类加载器(Bootstrap ClassLoader): 这个类加载器负责将<JAVA_HOME>\lib目录下的类库加载到虚拟机内存中,用来加载 Java...
8029178 hotspot runtime Parallel class loading test anonymous-simple gets SIGSEGV in Metaspace::contains 8029957 hotspot runtime PPC64 (part 213): cppInterpreter: memory ordering for object initialization 8030955 hotspot runtime assert(_prologue != NULL) failed: prologue pointer must be initialized ...