JavaSE教程_进阶
package com.wkcto.chapter08.demo01;
import java.lang.reflect.Modifier;
/**
* 通过反射技术, 反射类的信息
* @author 蛙课网
*
*/
public class Test02 {
public static void main(String[] args) {
//1)创建Class对象
// Class<?> class1 = String.class;
Class<?> class1 = Integer.class;
//2)反射类的信息
//2.1 类的修饰符
int mod = class1.getModifiers();
String modifiers = Modifier.toString(mod);
System.out.print( modifiers );
//2.2 类名
System.out.print(" class ");
// System.out.print( class1.getName() ); //完整类名
System.out.print( class1.getSimpleName() ); //简易类名
//2.3父类
Class<?> superclass = class1.getSuperclass();
//如果父类是Object,不显示父类
if ( Object.class != superclass) {
System.out.print(" extends ");
System.out.println( superclass.getSimpleName() );
}
//2.4接口
Class<?>[] interfaces = class1.getInterfaces();
if ( interfaces.length > 0 ) {
System.out.print(" implements ");
//遍历接口数组
for (int i = 0; i < interfaces.length; i++) {
System.out.print( interfaces[i].getSimpleName() );
//接口名之间使用逗号分隔
if ( i != interfaces.length - 1) {
System.out.print(",");
}
}
}
}
}