참조에 의한 복사

 class Student1{
  
 public String name;
 public int age;
 public String address;
}

public class ExamEx48{
 
 public static void main(String[] args){
 
  Student1 stu1;
  stu1 = new Student1();
  Student1 stu2 = new Student1();
  
  stu1.name = "홍길동";
  stu1.age = 20;
  stu1.address = "서울시";

  stu2.name = "고길동";
  stu2.age = 28;
  stu2.address = "수원시";
  
  //Student1@158f9d3 : 참조 주소
  System.out.println(stu1);
  System.out.println(stu1.name);
  System.out.println(stu1.age);
  System.out.println(stu1.address);
  
  //Student1@79a2e7
  System.out.println(stu2);
  System.out.println(stu2.name);
  System.out.println(stu2.age);
  System.out.println(stu2.address);

  Student1 stu3 = stu1; //참조에 의한 복사 Student1@158f9d3
  System.out.println(stu3);
  System.out.println(stu3.name);
  System.out.println(stu3.age);
  System.out.println(stu3.address);

  stu3.name = "박문수";
  System.out.println(stu3.name);
  System.out.println(stu1.name);
 }
}