生成 随机数列 到txt文件 java

@Test
public void test_case_Random() throws Exception {
Random rd1 = new Random();
    String path="D://Documents and Settings//Random.txt";  
for(int i=0;i<10000;i++){
    try {  
         FileWriter fw=new FileWriter(path,true);  
         BufferedWriter bw=new BufferedWriter(fw);  
         bw.newLine();  
         bw.write(rd1.nextInt()+" "+rd1.nextInt());  
         bw.close(); 
         fw.close();  
  } catch (IOException e) {  
       // TODO Auto-generated catch block  
      e.printStackTrace();  
   }
}
 
}