import Java.io.BufferedReader; import java.io.InputStreamReader; import java.lang.reflect.Method; import java.lang.reflect.Modifier; public class test { public static void main(String[] args) throws Exception { // BufferedReader bb=new BufferedReader(new InputStreamReader(System.in)); // String classname=bb.readLine(); Class c=Class.forName("ArrayListTest.java"); //-------------------获取方法的详细信息 Method m[]=c.getDeclaredMethods(); for(int i=0;i<m.length;i++) { //--------------------获得方法的名字 System.out.println("方法的名字是:"+m[i].getName()); //--------------------获得方法参数的类型和有几个参数 Class b[]=m[i].getParameterTypes();//获得所有的参数并且存放到数组B中 for(int j=0;j<b.length;j++) { System.out.println("参数的类型是"+b[j]); } //--------------------获得方法返回值的类型 System.out.println(m[i].getReturnType());//获得方法的返回值类型 //--------------------获得方法的修饰符 int mod=m[i].getModifiers(); System.out.println("方法的修饰符有"+Modifier.toString(mod)); //--------------------获得方法的异常类型 Class e[]=m[i].getExceptionTypes();//获得所有的异常类型存放到数组e中 for(int k=0;k<e.length;k++) { System.out.println("方法的异常类型是:"+e[k]); } System.out.println("-------------------------------------------------------------------"); } //----------------------------获得属性的详细信息 } } package Class //测试.com.tc.test.Class的forname方法获得属性信息; import java.lang.reflect.Field; import java.lang.reflect.Modifier; public class test { public static void main(String[] args) throws ClassNotFoundException { Class c=Class.forName("Class测试.com.tc.test.Class的forname方法获得属性信息.student");//把要使用的类加载到内存中,并且把有关这个类的所有信息都存放到对象c中 Field f[]=c.getDeclaredFields();//把属性的信息提取出来,并且存放到field类的对象中,因为每个field的对象只能存放一个属性的信息所以要用数组去接收 for(int i=0;i<f.length;i++) { System.out.println("属性的名称是:"+f[i].getName());//获得属性的名字 System.out.println("属性的类型是:"+f[i].getType());//获得属性的类型 int mod=f[i].getModifiers();//获得修饰符的常量总和 System.out.println(mod); System.out.println("属性的修饰符有:"+Modifier.toString(mod));//modifier类可以根据常量总和去计算到底有哪些修饰符 System.out.println("-------------------------------------------------------"); } } }
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