java 向文件中追加数据

package File;
import   java.io.*; 
public   class   File
{ 
	public   static   void   main(String   []args)
	{ 
		String   str; 
		BufferedWriter   bw; 
		BufferedReader   br; 
		try{ 
			System.out.println( "\n   please   input   some   information   saved   in   the   new   file   line.txt "); 
			br   =   new   BufferedReader(   new   InputStreamReader(   System.in   )   ); 
     	str   =   br.readLine(); 
     	bw   =   new   BufferedWriter(   new   FileWriter(   "line.txt ",   true   )   ); 
     	System.out.println( "finished..................... "); 
     	bw.newLine();//换行 
     	bw.write(   str   ); 
     	
     	br.close(); 
     	bw.close(); 
		}catch(   IOException   ioe   ){ 
			System.out.println(   "Some   Wrong   happen "   ); 
		} 
	} 
}