*/// private static class Atomic {// // initialize Unsafe machinery here, since we need to call Class.class instance method// // and have to avoid calling it in the static initializer of the Class class...// private static final Unsafe unsafe = Unsafe.getUnsafe();// // offset of C...
publicclassPeople{publicstaticvoidmain(String[]args){try{Peoplepeople=(People)Class.forName("People").newInstance();System.out.println(people);}catch(InstantiationExceptione){e.printStackTrace();}catch(IllegalAccessExceptione){e.printStackTrace();}catch(ClassNotFoundExceptione){e.printStackTrace();}}...
* {@code Class} object is the object that is locked by {@code * static synchronized} methods of the represented class. */publicfinal native Class<?>getClass(); 这个方法的作用就是返回某个对象的运行时类,它的返回值是 Class 类型,Class c = obj.getClass();通过对象 c ,我们可以获取该对象的...
* Class {@code Object} is the root of the class hierarchy. * Every class has {@code Object} as a superclass. All objects, * including arrays, implement the methods of this class. * * @author unascribed * @see java.lang.Class * @since JDK1.0 */ 1. 2. 3. 4. 5. 6. 7. 8....
Class Object is the root of the class hierarchy. Every class has Object as a superclass. All objects, including arrays, implement the methods of this class. Added in 1.0. Java documentation for java.lang.Object. Portions of this page are modifications based on work created and shared by the...
In this article, we’ll explore the different ways of finding an object’s class in Java. 2. Using the getClass() Method The first method that we’ll check is the getClass() method. First, let’s take a look at our code. We’ll write a User class: public class User { // impl...
The stream-unique identifier is a 64-bit hash of the class name, interface class names, methods, and fields. The value must be declared in all versions of a class except the first. It may be declared in the original class but is not required. The value is fixed for all compatible cla...
javac MCFICIB.java Then run the resulting application: java MCFICIB You should observe the following output: x = 10 temp = 37.0 y = 15 This output reveals that class initialization is performed in top-down order. () methods When compiling class initializers and class initialization blocks, th...
Class The Class object that represents the runtime class of this object. Attributes RegisterAttribute Remarks Returns the runtime class of this Object. The returned Class object is the object that is locked by static synchronized methods of the represented class. <b>The actual result type is...
obj.getClass().getSimpleName()); } TheClassclass, in thejava.langpackage, has a large number of methods (more than 50). For example, you can test to see if the class is an annotation (isAnnotation()), an interface (isInterface()), or an enumeration (isEnum()). You can see what...