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Thread: something strange

  1. #1
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    Default something strange

    I cant seem to figure this out, its probably something really easy that I'm over looking but its annoying me now.

    When someone types in "commands" they have to push the enter key twice before it will out print what its supposed to.

    Heres a snippet of my code:

    if (cmd.equals("commands")) {
    			for (int i = 0; i < commands.length; i++)
    				System.out.println("Current commands: " + commands[0][i] + commands[1][i]);
    		}

    Heres the whole class:
    import java.io.BufferedReader;
    import java.io.BufferedWriter;
    import java.io.FileWriter;
    import java.io.IOException;
    import java.io.InputStreamReader;
    import java.io.PrintWriter;
     
     
    public class Main {
     
    	private BufferedReader input = new BufferedReader(new InputStreamReader(System.in));
    	private String[][] commands = {{"newpassword", "listpasswords"}, 
    			{" - Saves the password you type", " - Shows a list of saved passwords."}};
     
    	public static void main(String[] args) throws IOException {
    		Main m = new Main();
    		while (true) {
    			System.out.println("Please type 'commands' to view a list of available commands, " +
    					"\nor just type in a command.");
    			m.getInput(m.input.readLine());
    		}
    	}
     
    	public void getInput(String cmd) throws IOException {
    		String password = input.readLine();
    		if (cmd.equals("commands")) {
    			for (int i = 0; i < commands.length; i++)
    				System.out.println("Current commands: " + commands[0][i] + commands[1][i]);
    		}
    		if (cmd.equals("newpassword")) {
    			writeToFile(password);
    			System.out.println("You typed" + password);
    		}
    	}
     
    	public void writeToFile(String toWrite) throws IOException {
    		FileWriter fstream = new FileWriter("password/file.txt");
    		BufferedWriter out = new BufferedWriter(fstream);
    		out.write(toWrite);
    		out.close();
    		System.out.println("Wrote " + toWrite +" to file.");
    	}
     
    }


  2. #2
    Super Moderator Norm's Avatar
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    Default Re: something strange

    before it will out print what its supposed to.
    What is it supposed to print?

  3. #3
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    Default Re: something strange

    the outprint of

    System.out.println("Current commands: " + commands[0][i] + commands[1][i]);

    would be

    Current commands: newpassword - Saves the password you type
    Current commands: listpasswords - Shows a list of saved passwords.

    so basically its just out printing array 'commands'

  4. #4
    Super Moderator Norm's Avatar
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    Default Re: something strange

    How many places in your code do you read input from the user? What happens to the input that is read?
    Add a println after EACH place you read something in from the user to print out what you read.
    Add some ID String to the output so you know what println printed it:
    println("ID1 input=" + <THEINPUTHERE> + "<");

  5. #5
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    Default Re: something strange

    I fixed it thanks

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