Java Class类浅析

public final class Class implements java.io.Serializable,
                              GenericDeclaration,
                              Type,
                              AnnotatedElement {
    private static final int ANNOTATION= 0x00002000;
    private static final int ENUM      = 0x00004000;
    private static final int SYNTHETIC = 0x00001000;

    private static native void registerNatives();
    static {
        registerNatives();
    }

    
    private Class(ClassLoader loader) {
        // Initialize final field for classLoader.  The initialization value of non-null
        // prevents future JIT optimizations from assuming this final field is null.
        classLoader = loader;
    }

由Class源码可见，其构造方法为私有方法，因此不可显示new出Class类，只能通过JVM调用生成

由图可知，每一个.java文件经过编译后会生成一个.class文件，该文件保存的就是HelloWorld的Class对象，经过JVM加载后便在内存中生成了一个HelloWorld的Class对象