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try {
FileReader f = new FileReader("c:/a.txt");
BufferedReader br = new BufferedReader(f);
String read = br.readLine();
while(read != null){
System.out.println(read);
read = br.readLine();
if(br.markSupported()){
if(read.equals("511111")){
System.out.println("标记位置在511111");
br.mark(0);
}
if(read.equals("911111")){
System.out.println("读取到这行返回到标记位置循环读取");
br.reset();
}
}
}
br.close();
f.close();
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}