如何使用打印流

Question

I have created a few methods to edit text from a file word by word but now need to use printStream to create a new file with the updated text. I have done some research on printStream but still don't quite understand how to do this. Here is my code:

public static void main(String[] args) throws FileNotFoundException {
    File jaws = new File("JawsScript.txt");
    Scanner in = new Scanner(jaws);


        while (in.hasNext()) {
    String word = in.next();

        PrintStream out =
    new PrintStream(new File("stuff.txt"));

    System.out.println(convert(word));

    } 

The method "convert" is a method that calls all of the other methods and applies all of the changes to a single string in the text:

//Applies all of the methods to the string
public static String convert(String s) {
  String result = "";
    result = rYah(s);
    result = rWah(result);
    result = transform(result);
    result = apend(result);
    result = replace(result);

    return result;
}

I basically am just wondering how I can use printStream to apply "convert" to the text and print the updated text to a new file.

Answer 1

First of all, don't reinitialize the PrintStream object in every loop iteration.

To write to a file, simply call PrintStream's println method. You may not realise it, but when you print to the console, this is exactly what you are doing. System.out is a PrintStream object.

PrintStream out =
    new PrintStream(new File("stuff.txt"));
while (in.hasNext()) {
    String word = in.next();
    out.println(convert(word));
}

Answer 2

import java.io.PrintStream;

public class Main2{
    public static void main(String[]args){
        String str = " The Big House is";
        PrintStream ps = new PrintStream(System.out);
        ps.printf("My name is : %s White", str);
        ps.flush();
        ps.close();
    }
}

Output is : The Big House is White

The other way to use PrintStream is...

        CharSequence cq = "The Big House is White";
        PrintStream ps = new PrintStream(System.out);
        ps.append(cq);
        ps.flush();
        ps.close();
    }
}