Thread: How can I search for words in a String?

Here is the program:

    import easyIO.*;
 
 
    public class test {
 
    // Main method
 
    public static void main(String[] args) {
 
            In tast = new In(); // Opens keyboard for reading
 
    System.out.println("1. Register a bird");
    System.out.println("2. Write birdtype");
    System.out.println("3. Write place");
    System.out.println("4. Close program");
 
    System.out.print("Choose number (1-4:) ");
    int valg = tast.inInt();
 
    switch (valg) {
    case 1: registerBird(); break;
    case 2: writeBirdtype(); break;
    case 3: writePlace(); break;
    case 4: System.exit(0); break;
 
    default: System.out.println("Error: Choose a number from 1-4"); System.exit(0);
 
 
    } // End of switch statement
 
    } // end of main method
 
    //  registerBird() method
 
    public static void registerBird() { 
 
    In tast = new In();  // Opens keyboard for reading
    Out birds = new Out("fugler.txt", true);
 
    System.out.println("Birds name: ");
    String fuNavn = tast.inLine();
    birds.out(fuNavn);
 
    System.out.println("Sex: ");
    String fuKjonn = tast.inLine();
    birds.out(fuKjonn);
 
    System.out.println("Place of observation: ");
    String stObs = tast.inLine();
    birds.out(stObs);
 
    System.out.println("Date of observation: ");
    String fuDato = tast.inLine();
    birds.out(fuDato);
 
    birds.close();
 
    } // end of registerBird() method
 
    // writeBirdtype() method
 
    public static void writeBirdtype() {
    In innSkjerm = new In(); // Klargjør innlesing fra terminal
    In fil = new In("fugler.txt"); // Klargjør innlesing fra fil
 
 
    System.out.println("Write out all the observations of a birdtype: ");
    String ord = innSkjerm.readLine();
 
    System.out.println("All the observations you asked for:");
    String linje = fil.inLine();
 
 
    } // end of writeBirdType() method
 
 
    } // end of class test

My problem lies in this method:

   public static void writeBirdtype() {
   In innSkjerm = new In(); // Start reading from terminal
   In fil = new In("fugler.txt"); // Starts reading fromfile
 
   System.out.println("Write out all the observations of a birdtype: ");
   String ord = innSkjerm.readLine();
 
   System.out.println("All the observations you asked for:");
   String linje = fil.inLine();
 
 
   } // end of writeBirdType() method

The problem is when the method asks for "Write out all the observations of a birdtype:" and i type in for example "Craw" then the next line only shows "All the observations you asked for:" without all the observations of Craw.

also the method writePlace() I haven't created that yet, just in case you're wondering

Thanks for help

i'm expecting my code to print out all the observations of for example "Craw" in a file, if you input that, but i'm not sure what kind of code I can use to print out all the observations of "Craw". Do you know any examples or hints I need to write to print out all the observations?

Well i'm not sure on how I can print out all the observations of one word which user has inputed. I'm very new to java. I know how to output text to file. I dont know how to create a List of String or how to use the String API to select the Strings you want. Do you know any place I can learn it?

--- Update ---

actually there is nothing wrong with the code i have posted, but my problem is that i am not sure on how i can print out all the words which user has inputed. Lets say if user inputs word "Crow" then the next line should print out all the words "Crow" from the txt file.

--- Update ---

I added a new code at the bottom

public static void skrivFugltype() {
  	In innSkjerm = new In(); // Klargjør innlesing fra terminal
  	In fil = new In("fugler.txt"); // Klargjør innlesing fra fil
 
  	System.out.println("Skriv ut alle observasjonene av en fugltype: ");
    String ord = innSkjerm.readLine();
 
    System.out.println("Alle observasjonene du ba om:");
    String linje = fil.readLine();
    System.out.println(linje);

But it now prints out wrong information and only one String. Like if i input "Craw", the output shows "Bird".

How would you print out all the info from input? For example you input "Craw" and the output shows all words related to "Craw"