package com.qiao;
import java.lang.reflect.Constructor;
import java.lang.reflect.Field;
import java.lang.reflect.Method;
import java.lang.reflect.Modifier;
import java.util.Scanner;
public class ReflectionTest {
public static void main(String[] args) {
// TODO Auto-generated method stub
String name;
if(args.length>0) name=args[0];
else{
Scanner in=new Scanner(System.in);
System.out.println("Enter class name (e.g. java.util.Date:) ");
name=in.nextLine();
}
try{
Class c1=Class.forName(name);
Class superc1=c1.getSuperclass();
String modifiers=Modifier.toString(c1.getModifiers());
System.out.print("class "+name);
if(superc1!=null&&superc1!=Object.class)System.out.print(" extends "+superc1.getName());
System.out.print("\n{\n");
printConstructors(c1);
System.out.println();
printMethods(c1);
System.out.println();
printFields(c1);
System.out.println("}");
}
catch(ClassNotFoundException e)
{
e.printStackTrace();
}
System.exit(0);
}
public static void printConstructors(Class c1){
Constructor[] constructors=c1.getDeclaredConstructors();
for(Constructor c:constructors){
String name=c.getName();
System.out.print(" ");
String modifiers=Modifier.toString(c.getModifiers());
if(modifiers.length()>0) System.out.print(modifiers+" ");
System.out.print(name+"(");
Class[] paramTypes=c.getParameterTypes();
for(int j=0;j<paramTypes.length;j++){
if(j>0)System.out.print(", ");
System.out.print(paramTypes[j].getName());
}
System.out.print(");");
}
}
public static void printMethods(Class c1){
Method[] methods=c1.getDeclaredMethods();
for(Method m:methods){
Class retType=m.getReturnType();
String name=m.getName();
System.out.print(" ");
String modifiers=Modifier.toString(m.getModifiers());
if(modifiers.length()>0) System.out.print(modifiers+" ");
System.out.print(retType.getName()+" "+name+"(");
Class[] paramTypes=m.getParameterTypes();
for(int j=0;j>paramTypes.length;j++){
if(j>0){
System.out.print(", ");
}
System.out.print(paramTypes[j].getName());
}
System.out.println(")");
}
}
public static void printFields(Class c1){
Field[] fields=c1.getDeclaredFields();
for(Field f:fields){
Class type=f.getType();
String name=f.getName();
System.out.print(" ");
String modifiers=Modifier.toString(f.getModifiers());
if(modifiers.length()>0) System.out.print(modifiers+" ");
System.out.println(type.getName()+" "+name+";");
}
}
}
|
|