Java Reflection Mechanism Example

Link:

Http://www.cnblogs.com/rollenholt/archive/2011/09/02/2163758.html

 Packagecom.stono.reftest;ImportJava.lang.reflect.Constructor;ImportJava.lang.reflect.Field;ImportJava.lang.reflect.Method;ImportJava.lang.reflect.Modifier; Public classRef {@SuppressWarnings ("Unused")     Public Static voidMain (string[] args)throwsException {//instantiate a class object;Glyph Glyph =NewGlyph (); Class<?extendsglyph> Class1 =Glyph.getclass (); Class<?> Class2 = Glyph.class; Class<?>CLASS3; CLASS3= Class.forName ("Com.stono.reftest.Glyph"); //classes are instantiated through class objects, and there must be no parameter constructorsGlyph GLYPH2 =class1.newinstance (); //get the constructor function through the class object;Constructor<?>[] Constructors = class1.getconstructors ();//Length of 1//gets the modifier of the constructor        intmodifiers = Constructors[0].getmodifiers (); //gets the modifier string;String Modifierstr =modifier.tostring (modifiers); //gets the parameter type of the constructor;class<?>[] Parametertypes = constructors[0].getparametertypes (); //Constructs the object through the constructor function;Glyph Glyph3 = (Glyph) constructors[0].newinstance (); //gets all the interfaces of the class;Class<?>[] Interfaces =class3.getinterfaces (); //gets the parent class of the classClass<?> superclass =Class3.getsuperclass (); //gets all the methods of the class and does not return a constructor;Method[] Methods =Class3.getmethods (); //gets the exception type; constructor and method are inherited from AccessibleObjectclass<?>[] Exceptiontypes = methods[0].getexceptiontypes (); Class<?>[] ExceptionTypes2 = constructors[0].getexceptiontypes (); //Get Local Propertiesfield[] Fields =Class3.getdeclaredfields (); //gets the properties of the interface or parent classfield[] Fields2 =Class3.getfields (); }}classGlyphImplementsIcon { PublicGlyph () {}}InterfaceIcon {}

Java Reflection Mechanism Example