class映射

package test;
import java.lang.*;
import java.lang.reflect.Constructor;
import java.lang.reflect.Method;
import java.lang.reflect.Modifier;

import java.lang.reflect.*;
public class ReflectionTest {
public static void main(String[] args) {
// 从命令行参数读取类名
String name;
if (args.length > 0)
name = args[0];
else
name = "test.main";
try {
// 打印类名及超类名，除了object
Class c1 = Class.forName(name);
Class superc1 = c1.getSuperclass();
System.out.print("class" + name);
if (superc1 != null && superc1 != Object.class)
System.out.print("extends" + superc1.getName());

System.out.print("{\n");
printConstructors(superc1);
System.out.println();
printMethods(superc1);
System.out.println();
printMethods(superc1);
System.out.println();
printFields(superc1);
System.out.println("}");
} catch (ClassNotFoundException e) {
e.printStackTrace();
}
System.exit(0);
}

public static void printConstructors(Class c1) {
Constructor[] constructors = c1.getDeclaredConstructors();
for (int i = 0; i < constructors.length; i++) {
Constructor c = constructors[i];
String name = c.getName();
System.out.print(Modifier.toString(c.getModifiers()));
System.out.print("" + name + "(");
// 打印参数类型
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.println(");");
}
}

// 打印类的所有方法
public static void printMethods(Class c1) {
Method[] methods = c1.getDeclaredMethods();
for (int i = 0; i < methods.length; i++) {
Method m = methods[i];
Class retType = m.getReturnType();
String name = m.getName();
// 打印返回类型和方法名
System.out.print(Modifier.toString(m.getModifiers()));
System.out.print("" + retType.getName() + "" + name + "(");
//打印参数类型
Class[]paramTypes=m.getParameterTypes();
for(int j=0;j{
if(j>0)
System.out.print(",");
System.out.print(paramTypes[j].getName());
}
System.out.println(");");
}
}
//打印所有属性
public static void printFields(Class c1)
{
Field[] fields=c1.getDeclaredFields();
for(int i=0;i{
Field f=fields[i];
Class type=f.getType();
String name=f.getName();
System.out.print(Modifier.toString(f.getModifiers()));
System.out.println(""+type.getName()+""+name+";");
}
}
}