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public class Io05 {
public static void main(String[] args) throws Exception {
File file = new File("E:"+File.separator+"demo.txt");
FileReader fr=new FileReader(file);
BufferedReader br=new BufferedReader(fr);
String line=br.readLine();
String temp="";
while(line!=null) {
System.out.println(line);
if (!line.equals("")) {
String[] s=line.split("\n");
temp=temp+s[0]+"\r\n";
}
line = br.readLine();
}
FileWriter fw=new FileWriter(file);
PrintWriter pw = new PrintWriter(fw,true);
pw.write(temp);
pw.close();
fw.close();
br.close();
fr.close();
}
}
public class Io05 {
public static void main(String[] args) throws Exception {
File file = new File("E:"+File.separator+"demo.txt");
FileReader fr=new FileReader(file);
BufferedReader br=new BufferedReader(fr);
FileWriter fw=new FileWriter(file);
PrintWriter pw = new PrintWriter(fw,true);
String line=br.readLine();
String temp="";
while(line!=null) {
System.out.println(line);
if (!line.equals("")) {
String[] s=line.split("\n");
temp=temp+s[0]+"\r\n";
}
line = br.readLine();
}
pw.write(temp);
pw.close();
fw.close();
br.close();
fr.close();
}
}