java中的深拷贝与浅拷贝问题

浅拷贝：仅复制引用，即两个引用指向同一个对象，如：
String aString = "hello";
String bString = aString;

深拷贝：复制对象的内容，Java里通过实现Clonnable并覆盖clone方法实现，具体深度由clone的实现决定，如：
public class People implements Clonnable{
private int age;
private String name;

public void setAge(int age){
this.age = age;
}

public int getAge(){
return this.age;
}

public void setName(String name){
this.name = name;
}

public String getAge(){
return this.name;
}

public Object clone(){
People people = new People();
people.setAge(this.age);
people.setName(this.name);

return people;
}
}