java84-object常用方法tostring，equals，hashcode

//object常用方法
public class test21 {
public static void main(String[] args) {
Object obj = new Object();
ObjectCl usr = new ObjectCl();
usr.setAge(6);
usr.setName("歌谣");
usr.say();
//tostring
String str =usr.toString();
System.out.println(str);
//equals
ObjectCl usr2=new ObjectCl();
boolean bool=usr2.equals(usr);
System.out.println(bool);
//getclass
System.out.println(usr.getClass());
//hashcode
System.out.println(usr.hashCode());
}
}
public class ObjectCl {
private String name;
private int age;
public void say(){
System.out.println(name);
System.out.println(age);
}
public void setAge(int age) {
this.age = age;
}

public int getAge() {
return age;
}

public void setName(String name) {
this.name = name;
}

public String getName() {
return name;
}

@Override
public String toString() {
return this.getClass().getName();
}
public boolean equals(Object obj){
return this==obj?false:true;
}
}

运行结果