letter.java

《Java面向对象程序设计》例子源代码.轻松学习书本.

//Letter.java
class Address{
	private String country;
	private String province;
	private String city;
	private String street;
	private String number;
	private String department;
	private String postCode;
	public Address(String ct,String pc,String cty,String strt,String num,String dep,String pst){
		country=ct;
		province=pc;
		city=cty;
		street=strt;
		number=num;
		department=dep;
		postCode=pst;
	}
	public String getCountry(){
		return country;
	}
	public String getProvince(){
		return province;
	}
	public String getCity(){
		return city;
	}
	public String getStreet(){
		return street;
	}
	public String getNumber(){
		return number;
	}
	public String getDepart(){
		return department;
	}
	public String getPostCode(){
		return postCode;
	}
	public String letterInfo(){
		return postCode+"\n"+country+province+city+street+number+department+"\n";
	}
}
class NativeAddress extends Address{
	public NativeAddress(String ct,String pc,String cty,String strt,String num,String dep,String pst){
		super(ct,pc,cty,strt,num,dep,pst);
	}
	public String letterInfo(){
		return "国内地址的格式为：\n"+super.letterInfo();
	}
	
}
class AbroadAddress extends Address{
	public AbroadAddress(String ct,String pc,String cty,String strt,String num,String dep,String pst){
		super(ct,pc,cty,strt,num,dep,pst);		
	}
	public String letterInfo(){
	    return "国外地址的格式为：\n"+this.getDepart()+",\n"
	            +this.getStreet()+this.getNumber()+",\n"+this.getProvince()+
	           ","+this.getCity()+",\n"
	            +this.getCountry()+","+this.getPostCode()+".\n";	
	}
}
public class Letter{
	public static void main(String args[]){
		NativeAddress ar=new NativeAddress("中国","江苏省","无锡市","蠡湖大道","1800号","江南大学","214000");
		AbroadAddress aa=new AbroadAddress("中国","江苏省","无锡市","蠡湖大道","1800号","江南大学","214000");
		System.out.println(ar.letterInfo());
		System.out.println(aa.letterInfo());
	}
}