java中的浅拷贝和深拷贝是什么？二者有什么区别？这些问题可能是我们日常工作会见到的。通过这些问题，希望你能收获更多。下面是揭开这些问题的详细内容。

1、什么叫Java浅拷贝？

浅拷贝是会将对象的每个属性进行依次复制，但是当对象的属性值是引用类型时，实质复制的是其引用，当引用指向的值改变时也会跟着变化。

2、什么叫Java深拷贝？

深拷贝复制变量值，对于引用数据，则递归至基本类型后，再复制。深拷贝后的对象与原来的对象是完全隔离的，互不影响，对一个对象的修改并不会影响另一个对象。

3、Java浅拷贝和深拷贝的区别是什么？

通俗来讲浅拷贝的复制其引用，当引用指向的值改变时也会跟着变化；而深拷贝则是与原来的对象完全隔离，互补影响。

4、思维导图

5、测试用例分析

浅拷贝测试用例

public class ShallowExperience { private String skill; public void setSkill(String skill) { this.skill = skill; } public void setShallowExperience(String skill) { this.skill = skill; } @Override public String toString() { return skill; }}public class ShallowCloneTest implements Cloneable { private int age; private ShallowExperience shallowExperience; public ShallowCloneTest() { this.age = 10; this.shallowExperience = new ShallowExperience(); } public ShallowExperience getExperience() { return shallowExperience; } public void setShallowExperience(String skill) { shallowExperience.setShallowExperience(skill); } public void show() { System.out.println(shallowExperience.toString()); } public int getAge() { return age; } @Override protected Object clone() throws CloneNotSupportedException { return (ShallowCloneTest) super.clone(); }}public class TestMain { public static void main(String[] args) throws CloneNotSupportedException { System.out.println("======浅拷贝======"); shallowCloneTest(); } /** * 浅拷贝测试用例 * * @throws CloneNotSupportedException */ private static void shallowCloneTest() throws CloneNotSupportedException { ShallowCloneTest test = new ShallowCloneTest(); test.setShallowExperience("我是小明，我精通Java，C++的复制粘贴"); test.show(); ShallowCloneTest cloneTest = (ShallowCloneTest) test.clone(); cloneTest.show(); cloneTest.setShallowExperience("我是小明的副本，我精通Java,C++"); cloneTest.show(); test.show(); System.out.println(cloneTest.getAge()); }}//运行结果======浅拷贝======我是小明，我精通Java，C++的复制粘贴我是小明，我精通Java，C++的复制粘贴我是小明的副本，我精通Java,C++我是小明的副本，我精通Java,C++10

深拷贝测试用例

public class DeepExperience implements Cloneable{ private String skill; public void setSkill(String skill) { this.skill = skill; } public void setDeepExperience(String skill) { this.skill = skill; } @Override public String toString() { return skill; } @Override protected Object clone() throws CloneNotSupportedException { return super.clone(); }}public class DeepCloneTest implements Cloneable { private int age; private DeepExperience deepExperience; public DeepCloneTest() { this.age = 10; this.deepExperience = new DeepExperience(); } public DeepExperience getExperience() { return deepExperience; } public void setDeepExperience(String skill) { deepExperience.setDeepExperience(skill); } public void show() { System.out.println(deepExperience.toString()); } public int getAge() { return age; } @Override protected Object clone() throws CloneNotSupportedException { DeepCloneTest deepCloneTest = (DeepCloneTest) super.clone(); deepCloneTest.deepExperience = (DeepExperience) deepCloneTest.getExperience().clone(); return deepCloneTest; }}public class TestMain { public static void main(String[] args) throws CloneNotSupportedException { System.out.println("======深拷贝======"); deepCloneTest(); } /** * 深拷贝测试用例 * * @throws CloneNotSupportedException */ private static void deepCloneTest() throws CloneNotSupportedException { DeepCloneTest test = new DeepCloneTest(); test.setDeepExperience("我是小明，我精通Java，C++的复制粘贴"); test.show(); DeepCloneTest cloneTest = (DeepCloneTest) test.clone(); cloneTest.show(); cloneTest.setDeepExperience("我是小明的副本，我精通Java,C++"); cloneTest.show(); test.show(); System.out.println(cloneTest.getAge()); }}//运行结果======深拷贝======我是小明，我精通Java，C++的复制粘贴我是小明，我精通Java，C++的复制粘贴我是小明的副本，我精通Java,C++我是小明，我精通Java，C++的复制粘贴10

到此为止, 关于java中的浅拷贝和深拷贝有了一个基础的认识, 但是对于具体的使用方法还是需要多加巩固和练习，如果想了解更多相关内容，请关注亿速云行业资讯。