Java深入理解深拷貝和淺拷貝區別

Java中使用對象的父類的clone方法和直接賦值都是淺拷貝，例如：

class Student implements Cloneable {
    ...
    public Object clone() throws CloneNotSupportedException {
        Object object = super.clone();
        return object;
    }
}

public class Main {
    public static void main(String[] args) throws CloneNotSupportedException {
        Student student1 = new Student();
        Student student2 = (Student)student1.clone();
    }
}

和

class Student{
    ...
}

public class Main {
    public static void main(String[] args) {
        Student student1 = new Student();
        Student student2 = student1;
    }
}

效果是一樣的。

參考：

Java深入理解深拷貝和淺拷貝區別