searching for specific data in a text file

[Rodney Ibanez]

Please help. I don't know where I am wrong with my code. I would like to be able to search a certain word in my text file either using scanner or buffered reader. using scanner to get the input from the user to search for the word and using buffered reader to actually look for the word in my text file would be better. If there's no way to do that, then anything will do just fine. Thank you.
Here is my complete code.

public class WriteAndRead {
	
	String nameOfFile = "WriteAndRead.txt";
	String string;
	
	WriteAndRead(){
		Scanner scanned = new Scanner(System.in);
		
		try {
			BufferedWriter bWriter = new BufferedWriter(new FileWriter(nameOfFile, true));
			BufferedReader bReader = new BufferedReader(new FileReader(nameOfFile));
			
			System.out.println("Enter full name");
			String name = scanned.nextLine();
			bWriter.write(name +"\n");
			bWriter.flush();
			System.out.println("Data Saved.");
			
			
//			while((string = bReader.readLine()) != null){
//				System.out.println(string);
//			}
			
		} catch (IOException e) {
			e.printStackTrace();
		}
		
		System.out.println("Would you like to input another data?");
		char choice;
		choice = scanned.next().charAt(0);
		
		switch(choice){
		case 'Y':
		case 'y':
			new WriteAndRead();
			break;
			
		case 'N':
		case 'n':
			System.out.println("Goodbye.");
			System.exit(0);
			break;
			
		case 'S':
		case 's':
			searchFile();
		}
	}
	
	public void searchFile(){

		Scanner scanned = new Scanner(System.in);
		
		System.out.println("Enter name to search");
		String rt = scanned.next();
		
		Scanner scannedFile = new Scanner(nameOfFile);
		while(scannedFile.hasNext()){
			String search = scannedFile.next();
			if(search.equals(rt)){
				System.out.println("Found: " +search);
			} else {
				System.out.println("No data found.");
			}
		}
	}
	
	public static void main(String args[]){
		new WriteAndRead();
	}
}

[Darryl Burke]

Since this question doesn't have anything to do with any of Swing / AWT / SWT I've moved it here.

You might find the classes in the java.util.regex package usefule for your task. Unless of course this is an assignment that requires you to reinvent that particular wheel.

[Rodney Ibanez]

Darryl Burke wrote:Since this question doesn't have anything to do with any of Swing / AWT / SWT I've moved it here.

You might find the classes in the java.util.regex package usefule for your task. Unless of course this is an assignment that requires you to reinvent that particular wheel.

Thanks.. I've learned a lot from the regex package!I came up with a solution.. I changed the .equalsto() with .matches(regex) now I have a different issue.. How can I make my program stop searching as soon as it finds a match? they say i don't need the goto anymore for a really clean coding since "goto" is only used for assembly. here is my new code..

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.util.Scanner;

public class WriteAndRead {
	
	String nameOfFile = "WriteAndRead.txt";
	String string;
	
	WriteAndRead(){
		Scanner scanned = new Scanner(System.in);
		
		try {
			BufferedWriter bWriter = new BufferedWriter(new FileWriter(nameOfFile, true));
			BufferedReader bReader = new BufferedReader(new FileReader(nameOfFile));
			
			System.out.println("Enter full name");
			String name = scanned.nextLine();
			bWriter.write(name +"\n");
			bWriter.flush();
			System.out.println("Data Saved.");
			bWriter.close();
			
//			while((string = bReader.readLine()) != null){
//				System.out.println(string);
//			}
			
		} catch (IOException e) {
			e.printStackTrace();
		}
		
		System.out.println("Would you like to input another data?");
		char choice;
		choice = scanned.next().charAt(0);
		
		switch(choice){
		case 'Y':
		case 'y':
			new WriteAndRead();
			break;
			
		case 'N':
		case 'n':
			System.out.println("Goodbye.");
			System.exit(0);
			break;
			
		case 'S':
		case 's':
			searchFile();
		}
	}
	
	public void searchFile(){
		try {
			System.out.println("Enter data to search");
			Scanner sc = new Scanner(System.in);
			String word = sc.next();
			
			BufferedReader br = new BufferedReader(new FileReader(nameOfFile));
			
			while((string = br.readLine()) != null){
				String starr[] = string.split(" ");
				
				for (String string2 : starr) {
					if(string2.matches(word)){
						System.out.println("Found record for " +word);
					} else {
						System.out.println("Searching...");
					}
				}
			}	System.out.println("Done");
		} catch (IOException e) {
			e.printStackTrace();
		}
		
	}
	
	public static void main(String args[]){
		new WriteAndRead();
	}
}