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  • ChristopherLowe

    by Published on June 21st, 2011 05:50 PM
    1. Categories:
    2. Java Tutorials

    This class simplifies the common task of asking the user for valid input. It was designed to be as simple to use as possible.

    Example usage:
    //Ask for the users name
    String name = Console.readString("Enter your name:");
     
    //Ask for the users age (between 6 and 110)
    int age = Console.readInteger("Enter you age:", "You cannot be that old!", 6, 110);
     
    //Ask for a float
    float pay = Console.readFloat("How much do you earn per hour:");
     
    //Ask for a double
    double pi = Console.readDouble("Enter as many digits of PI as you can remember:");
     
    //Ask a yes/no question
    boolean isProgrammer = Console.readYesNo("Are you a programmer [YES or NO]:");
     
    //Ask for an integer with the default prompt
    int i0 = Console.readInteger();
     
    //Ask for an integer with a custom prompt
    int i1 = Console.readInteger("Enter a number: ");
     
    //Ask for an integer with a custom prompt and custom error message
    int i2 = Console.readInteger("Enter a number: ", "Try again.");
     
    //Ask for an integer in the range 1..10 with a custom prompt and custom error message 
    int i3 = Console.readInteger("Enter a number between 1 and 10", "Not in range.", 1, 10);
     
    //Ask if the user would like to quit (put this in an infinite loop)
    if (Console.readYesNo("Really Quit [y/n]")) { System.exit(0); }
    ...
    by Published on June 18th, 2011 12:50 PM
    1. Categories:
    2. Java Tutorials

    Introduction
    Hi, my name is Chris and I love to program. I was inspired to write this tutorial because Java is an excellent language for manipulating images yet the information on how do so is scattered and incomplete. Basically, I would like to share the critical code and concepts involved in simple image processing and the code for an application to view the results. I will be using a BufferedImage of TYPE_INT_ARGB exclusively and the javax.imageio package to read and write to a PNG file.
    ...