Explore BrainMass
Share

Explore BrainMass

    simple java questions

    This content was COPIED from BrainMass.com - View the original, and get the already-completed solution here!

    Please explain these:

    1. In general are attributes public and methods are private?

    2. Suppose you must define a class called PlayingCard. What are two examples of attributes and two examples of behaviors for this class?

    3. Define a single constructor for this class.
    public class Student
    {
    //attributes
    private String studentID;
    private double gpa;
    private boolean hasFunding;
    private String major;

    //constructor definition

    }

    4. Rewrite the above code so that it requires as few lines as possible:
    String s;
    Fraction f;
    f = new Fraction( 100, 200 );
    s = f.toString( );
    System.out.println( s );

    5. How many objects are instantiated in the code below:
    String s;
    Fraction f, g;
    Point w, x;
    JFrame j;
    f = new Fraction(25, 35);
    g = f;
    w = new Point(5, 10);

    6. How many objects are instantiated in the code below:
    String title = "Push Me"
    JButton one = new JButton(title);
    JButton two;
    two = one;

    7. Is length is an attribute of the String class?

    8. Does this line of code compile:
    String herName = new String("Naomi");

    9. Is an object instantiated in the heap when this line of code is executed?
    String hisName = "Dan Jones";

    10. In the following code what is displayed on the screen (case sensitive)
    String x;
    x = new String("Goodbye");
    x.toUpperCase( );
    System.out.println( x );

    11. In the following code how many String objects are instantiated?
    String y, z;
    y = new String("This is easier than I thought!");
    z = y.substring(11, 13);.

    © BrainMass Inc. brainmass.com October 10, 2019, 7:25 am ad1c9bdddf
    https://brainmass.com/computer-science/java/simple-java-questions-581022

    Solution Preview

    See the attached file.

    1. In general are attributes public and methods are private?
    In general attributes are private and methods are public
    2. Suppose you must define a class called PlayingCard. What are two examples of attributes and two examples of behaviors for this class?
    Attributes: cardSuite, cardValue
    Methods: getSuite, getValue
    3. Define a single constructor for this class.
    public class Student
    {
    //attributes
    private String ...

    Solution Summary

    The solution discusses the answers to some simple java questions.

    $2.19