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Thread: Beginner: Need help with making an object value equal another object value without using literals.

  1. #1
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    Default Beginner: Need help with making an object value equal another object value without using literals.

    Hey everyone,

    I'm new to the programming world and I'm currently taking my first java programming course. I have to do an assignment which requires me adjust the altitude of two different balloons in a tester class. So far I believe I've done everything according to the professors instructions, but I'm stuck near the end. The question asks to "make the object you created in step 2 descend to the same altitude as the other object." He wants us to do this without just calculating the altitude ourselves and setting it as an int. I have no idea what to do here! Please help! My code so far looks like this:

    public class BalloonTester {
    public static void main(String[] args)
    {
    Balloon balloon = new Balloon("Balloon", 100);
    Balloon balloon2 = new Balloon ("Balloon2",-100);

    int Altitude ;
    String Name ;

    Name = balloon.getName() ;
    Altitude = balloon.getAltitude() ;
    System.out.println(Name);
    System.out.println(Altitude);

    Name = balloon2.getName() ;
    Altitude = balloon2.getAltitude();
    System.out.println(Name);
    System.out.println(Altitude);

    balloon.ascendTo(250) ;

    balloon2.adjustAltitude(+200) ;

    Name = balloon.getName() ;
    Altitude = balloon.getAltitude() ;
    System.out.println(Name);
    System.out.println(Altitude);

    Name = balloon2.getName() ;
    Altitude = balloon2.getAltitude();
    System.out.println(Name);
    System.out.println(Altitude);

    balloon.adjustAltitude(-100);

    --- Update ---

    the next line would be the step that he's asking us to complete. I feel its fairly simple, I just for the life of me can't figure it out.


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    Default Re: Beginner: Need help with making an object value equal another object value without using literals.

    Set the altitude of one object to the altitude of the other:

    balloon2.setAltitude( balloon1.getAltitude() );

    Or, if you have to use the adjustAltitude() method, then subtract one object's altitude from the other to get the adjustment:

    balloon2.adjustAltitude( balloon1.getAltitude() - balloon2.getAltitude() );

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    Default Re: Beginner: Need help with making an object value equal another object value without using literals.

    ahh okay thats so simple! thanks!

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