1.用new语句创建对象
2.运用反射手段
3.调用对象的clone()方法
4.运用反序列化手段
代码
//new
Student student = new Student();
student.setAge("12");
student.setClassName("三年级一班");
System.out.println(student);
//反射-Contructor
Constructor constructor = Student.class.getConstructor();
Student student1 = constructor.newInstance();
System.out.println(student1);
//反射-newInstance
Student student2 = Student.class.newInstance();
System.out.println(student2);
//clone
Student student3 = student.clone();
System.out.println(student3);
//反序列化
FileInputStream fileInputStream = new FileInputStream("E://tmp/employee.ser");
ObjectInputStream objectInputStream = new ObjectInputStream(fileInputStream);
Student student4 = (Student) objectInputStream.readObject();
System.out.println(student4);
Original: https://www.cnblogs.com/excellencesy/p/14382001.html
Author: song.yan
Title: java 创建对象的几种方式
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