怎样把string里的东西生成一个文件和把文件的内容读到string中

[josephlong]

请给个例子 谢谢

[hccpro]

写：
PrintWriter out = new PrintWriter(new FileOutputStream("a.txt"));
out.println("xxxx");
out.close();

读：
BufferedReader in = new BufferedReader(
new InputStreamReader(
new FileInputStream("a.txt")));
String s = null;
while((s=in.readLine())!=null) System.out.println(s);

[hccpro]

sorry，上面忘了in.close();

[Patrick_DK]

去看看java.io　package吧

[hexiaofeng]

看看ｊａｖａ．ｉｏ．RandomAccessFile 类

[rinehart]

文件的内容读到string中:
FileInputStream in = null;
in = new FileInputStream("C:\a.txt");
int num = in.available();
byte[] buffer = new byte[num];
in.read(buffer);
String str = new String(buffer,0);

[rinehart]

把string里的东西生成一个文件:
FileOutputStream out = null;
out = new FileOutputStream("C:\a.txt");
DataOutputStream textout = null;
textout = new DataOutputStream(out);
String val = "要写入的字符串";
textout.writeBytes(val);
textout.close();
out.close();