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java-core-learning-example's Issues

深拷贝报错

o.family = (Family) family.clone();
The method clone() from the type Object is not visible
这个怎么解决

深拷贝与浅拷贝的问题

请问,在CopyT.java中这两段代码有什么区别吗?
"""

    // 浅拷贝
    // 对其对象的引用却没有拷贝
    Student student2 = (Student) student1.clone();
    student2.setName("Jeff2");
    student2.getFamily().setName("Jeff2 Family");
    System.out.println(student1.getName() + " " + student1.getFamily().getName());
    System.out.println(student2.getName() + " " + student2.getFamily().getName());

    // 深拷贝

// Student student2 = (Student) student1.clone();
// student2.setName("Jeff2");
// student2.getFamily().setName("Jeff2 Family");
// System.out.println(student1.getName() + " " + student1.getFamily().getName());
// System.out.println(student2.getName() + " " + student2.getFamily().getName());
"""

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