{"id":2910,"date":"2022-04-23T23:23:45","date_gmt":"2022-04-23T15:23:45","guid":{"rendered":"https:\/\/www.zeroheart.xyz\/wordpress\/?p=2910"},"modified":"2022-04-23T23:23:45","modified_gmt":"2022-04-23T15:23:45","slug":"java%e5%88%9b%e5%bb%ba%e5%af%b9%e8%b1%a1%e7%9a%84%e5%87%a0%e7%a7%8d%e6%96%b9%e5%bc%8f","status":"publish","type":"post","link":"https:\/\/www.zeroheart.xyz\/wordpress\/?p=2910","title":{"rendered":"java\u521b\u5efa\u5bf9\u8c61\u7684\u51e0\u79cd\u65b9\u5f0f"},"content":{"rendered":"\n

https:\/\/blog.csdn.net\/m0_47683853\/article\/details\/109017364<\/a><\/p>\n\n\n\n

new\u3001\u53cd\u5c04\u3001\u53cd\u5e8f\u5217\u5316\u3001clone<\/p>\n\n\n\n

1. <\/p>\n\n\n\n

new object(xxx);<\/p>\n\n\n\n

2.<\/p>\n\n\n\n

Class clazz = Dog.class; Dog dog = (Dog)clazz.newInstance();<\/p>\n\n\n\n

Class clazz=Dog.class;
Constructor constructor=clazz.getConstructor(String.class,int.class});
Dog dog=(Dog) constructor.newInstance(“xiaohei”,3});
System.out.println(dog.name+” “+dog.age);<\/p>\n\n\n\n

3.<\/p>\n\n\n\n

Dog dog=new Dog();
dog.name=”xiaohei”;
dog.age=3;
FileOutputStream fos = new FileOutputStream(“dog.txt”);
ObjectOutputStream ops = new ObjectOutputStream(fos);
ops.writeObject(dog);
System.out.println(“dog\u5bf9\u8c61\u5e8f\u5217\u5316\u5b8c\u6210”);<\/p>\n\n\n\n

FileOutputStream fos=new FileOutputStream(“dog.txt”);
ObjectInputStream ois=new ObjectInputStream(fos);
Dog dog=(Dog) ois.readObject();
System.out.println(“\u6211\u53eb”+dog.name+”\u4eca\u5e74”+dog.age+”\u5c81\u4e86”);
System.out.println(“\u5bf9\u8c61\u53cd\u5e8f\u5217\u5316\u5b8c\u6210”);<\/p>\n\n\n\n

4.<\/p>\n\n\n\n

\u6211\u4eec\u73b0\u5728\u5c31\u6765\u5b8c\u6210clone\u7684\u5b9e\u9a8c\uff0c\u9996\u5148\u6211\u4eec\u9700\u8981\u5728\u9700\u8981clone\u7684\u7c7b\u4e2d\u5b9e\u73b0Cloneable\u63a5\u53e3\uff0c\u5426\u5219\u4f1a\u51fa\u73b0java.lang.CloneNotSupportedException\u5f02\u5e38,\u7531\u4e8eObject\u7c7b\u4e2dclone\u65b9\u6cd5\u662fprotected \u4fee\u9970\u7684\uff0c\u6240\u4ee5\u6211\u4eec\u5fc5\u987b\u5728\u9700\u8981\u514b\u9686\u7684\u7c7b\u4e2d\u91cd\u5199\u514b\u9686\u65b9\u6cd5<\/p>\n\n\n\n

public class Dog implements Cloneable{
String name;
int age;
@Override
protected Object clone() throws CloneNotSupportedException {
\/\/TODO Auto-generated method stub
return super.clone();
}
}<\/p>\n\n\n\n

\u73b0\u5728\u8fdb\u5165\u5b9e\u9a8c1\uff1a
Dog d1=new Dog();
Dog d2=d1;
System.out.println(d1==d2);<\/p>\n\n\n\n

Dog d1=new Dog(); Dog d2=(Dog) d1.clone(); System.out.println(d1==d2);<\/p>\n\n\n\n

\u5b9e\u9a8c\u7ed3\u679c\u4e3afalse\uff0c\u56e0\u4e3aclone\u662f\u771f\u5b9e\u5728\u5185\u5b58\u4e2d\u91cd\u65b0\u5212\u5206\u4e00\u5757\u533a\u57df\u6765\u5b58\u50a8\u65b0\u7684\u5bf9\u8c61\uff0cd1\u548cd2\u662f\u4e24\u4e2a\u4e0d\u540c\u7684\u5bf9\u8c61\u6240\u4ee5\u8fd4\u56de\u7ed3\u679c\u503c\u4e3afalse
\u8fd9\u6837\u6211\u4eec\u5c31\u4f7f\u7528\u4e86\u5bf9\u8c61\u7684\u514b\u9686\u7684\u65b9\u5f0f\u5b8c\u6210\u4e86java\u5bf9\u8c61\u7684\u521b\u5efa<\/p>\n\n\n\n

<\/p>\n","protected":false},"excerpt":{"rendered":"

https:\/\/blog.csdn.net\/m0_47683853\/article\/details\/10901 […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6],"tags":[],"_links":{"self":[{"href":"https:\/\/www.zeroheart.xyz\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/2910"}],"collection":[{"href":"https:\/\/www.zeroheart.xyz\/wordpress\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.zeroheart.xyz\/wordpress\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.zeroheart.xyz\/wordpress\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.zeroheart.xyz\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2910"}],"version-history":[{"count":3,"href":"https:\/\/www.zeroheart.xyz\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/2910\/revisions"}],"predecessor-version":[{"id":2913,"href":"https:\/\/www.zeroheart.xyz\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/2910\/revisions\/2913"}],"wp:attachment":[{"href":"https:\/\/www.zeroheart.xyz\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2910"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.zeroheart.xyz\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2910"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.zeroheart.xyz\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2910"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}