java-basic

Java 基础语法应用

类型判断

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参考类型判断

判断是否实现接口

import java.io.Serializable;  
  
public class IsAssignableFromTest implements Serializable{  
  
    /** 序列号 */  
    private static final long serialVersionUID = 5716955136475665579L;  
  
    public static void main(String[] args) {  
          
        //测试是否实现了父类  
        boolean re1= Object.class.isAssignableFrom(IsAssignableFromTest.class);  
        //测试是否实现了接口  
        boolean re2=Serializable.class.isAssignableFrom(IsAssignableFromTest.class);  
          
        System.out.println("re1:"+re1+" re2:"+re2);  
    }  
}