IO流的讀寫操做

public void testIO() throws Exception{

    

    List<String> lines = IOUtils.readLines(new FileInputStream(new File("c:" +     File.separator + "private1.key")));

StringBuilder sb = new StringBuilder();

for (String line : lines) {

sb.append(line);

  }

 System.out.println("----------: " +sb.toString());

 File mkdir = new File("d:" + File.separator + "zheng" );

 if (!mkdir.exists()) {

mkdir.mkdirs();

  }

IOUtils.write(sb.toString(), new FileOutputStream(new File("d:" +     File.separator + "zheng" + File.separator + "ttt.txt")));

}