grawriter.java

Java实现的常用数据结构算法

 package Graphics;
 import java.io.*;
 import java.util.*;
 import java.awt.*;
 public class GraWriter{
 	FileWriter fw;
 	public  GraWriter(String filename){
 		try{
 			fw=new FileWriter(filename+".obj",true);
 		}catch(IOException e){
        e.printStackTrace();
         }
 		
 	}
 	public void write(Point v)throws IOException{
 			fw.write("\nv "+v.x+" "+v.y);
 		
 	}
 	public void write(Rectangle r)throws IOException{
 			fw.write("\n l "+r.x+" "+r.y+""+r.width+""+r.height);
 		
 	}
 	public void write(Vector v ,String type){
 		int len=v.size();
 		int i=0;
 		Object obj=null;
 		try{
 			if(type=="Point"){
 				while(i<len){
 					obj=v.get(i);
 					write((Point)obj);
 					i++;
 				}
 			}else if(type=="Line"){
 				while(i<len){
 					obj=v.get(i);
 					write((Rectangle)obj);
 				}
 			}
 		fw.close();				
 		}catch(IOException e){
        e.printStackTrace();
          }
          
 	}
 }