一个简单的JAVA问题，请迅速帮忙，谢谢！

[KENNY_YY]

大家好！以下代码我调试通过的，问题是如果将 类aaa中的 protected 改成 private 后，如何修改其他代码，谢谢指导！

class aaa
{

protected String name;
protected String location;

public aaa(String name,String address)
{
this.name=name;
this.location=address;
}

public String toString()
{
return name+"在"+location;
}

}

class bbb extends aaa
{
private int population;

public bbb(String name,String location)
{
super(name,location);
population=2;
}

public bbb(String name,String location,int population)
{
super(name,location);
this.population=population+10000;
}

public void setPopulation(int population)
{
this.population=population;
}

public int getPopulation()
{
return population;
}

public String toString()

{
return name+"in"+location+":人口数量"+population+"\n";
}
}

class useX1
{
public static void main(String args[])
{
bbb b1=new bbb("aaa","bbb");
System.out.println(b1);
bbb b2=new bbb("ccc","ddd",31);
System.out.print(b2);
}
}

[KENNY_YY]

顶，急急急，多谢各位高人！

[dracularking]

那就在bbb中完成原来需要aaa协助完成的初始化工作
但这样就舍弃了父类

class bbb  {
	private int population;
	
	private String name;

	private String location;

	public bbb(String name, String location) {
//		super(name, location);
		this.name = name;
		this.location = location;
		population = 2;
	}

	public bbb(String name, String location, int population) {
//		super(name, location);
		this.name = name;
		this.location = location;
		this.population = population + 10000;
	}

	public void setPopulation(int population) {
		this.population = population;
	}

	public int getPopulation() {
		return population;
	}

	public String toString()

	{
		return name + "in" + location + ":人口数量" + population + "\n";
	}
}

[ltc_mouse]

是否可以只修改子类bbb的toString()方法,其他的似乎没有影响。
不过这么改,原本派生类输出的"in"没了，变成父类的"在"了

public String toString() { 
   return super.toString()+":人口数量"+population+"\n"; 
}

[cursor_wang]

加个get方法就好了．

class aaa {

	private String name;

	private String location;

	public aaa(String name, String address) {
		this.name = name;
		this.location = address;
	}

	public String toString() {
		return name + "在" + location;
	}
	public  String getName(){
		return name;
	}
	public String getLocation(){
		return location;
	}

}

class bbb extends aaa {
	private int population;

	public bbb(String name, String location) {
		super(name, location);
		population = 2;
	}

	public bbb(String name, String location, int population) {
		super(name, location);
		this.population = population + 10000;
	}

	public void setPopulation(int population) {
		this.population = population;
	}

	public int getPopulation() {
		return population;
	}

	public String toString()

	{
		return this.getName() + "in" + this.getLocation() + ":人口数量" + population + "\n";
	}
}

class useX1 {
	public static void main(String args[]) {
		bbb b1 = new bbb("aaa", "bbb");
		System.out.println(b1);
		bbb b2 = new bbb("ccc", "ddd", 31);
		System.out.print(b2);
	}
}