发布于 2016-07-04 10:24:49 | 132 次阅读 | 评论: 0 | 来源: 网友投递
Java程序设计语言
java 是一种可以撰写跨平台应用软件的面向对象的程序设计语言，是由Sun Microsystems公司于1995年5月推出的Java程序设计语言和Java平台（即JavaEE(j2ee), JavaME(j2me), JavaSE(j2se)）的总称。
自己实现了一遍：
public class A implements Cloneable {
public String str[];A() {
str = new String[2];
}
public Object clone() {
A o = null;
try {
o = (A) super.clone();
} catch (CloneNotSupportedException e) {
e.printStackTrace();
}
o.str = new String[2];
return o;
}
}
void run() throws Exception {
A a1 = new A(), a2 = new A();
a1.str[0] = "a"; a1.str[1] = "b";
a2 = (A) a1.clone();
a2.str[0] = "c"; a2.str[1] = "d";
System.out.println(a1.str[0] + " " + a2.str[0]);
}
结果：
a c
1.
public class A implements Cloneable {
public String name; public Object clone() {
A o = null;
try {
o = (A) super.clone();
} catch (CloneNotSupportedException e) {
e.printStackTrace();
}
return o;
}
}
2.
public class A implements Cloneable {
public String name[];
public A(){
name=new String[2];
} public Object clone() {
A o = null;
try {
o = (A) super.clone();
} catch (CloneNotSupportedException e) {
e.printStackTrace();
}
return o;
}
}
3.
public class A implements Cloneable {
public String name[];
public Vector<B> claB;
public A(){
name=new String[2];
claB=new Vector<B>();
}
public Object clone() {
A o = null;
try {
o = (A) super.clone();
} catch (CloneNotSupportedException e) {
e.printStackTrace();
}
o.name=new String[2];//深度clone
o.claB=new Vector<B>();//将clone进行到底
for(int i=0;i<claB.size();i++){
B temp=(B)claB.get(i).clone();//当然Class B也要实现相应clone方法
o.claB.add(temp);
}
return o;
}
}