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sassy
java oop
1 Answer(s)      5 years and 11 months ago
Posted in : Java Beginners



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December 1, 2008 at 1:00 AM


Hi friend,

public class XClass
{

private int u;
private double w;

public XClass()
{
}

public XClass(int a, double b)
{
}

public void func()
{
}

public void print()
{
}

}

As per your code :

a. How many members does class XClass have?

Answer : 6

b. How many private members does class XClass have?

Answer : 2
c. How many constructors does class XClass have?

Answer :2
d. Write the definition of the member func so that u is set to 10 and w is set to 15.3
Answer :
public void func()
{
this.u=10;
this.v = 15.3;
}

e. Write the definition of the member print that prints the contents of u and w.
Answer :

public void print()
{
System.out.println("u " + u);
System.out.println("w " + w);
}

f. Write the definition of the default constructor of the class XClass so that the instance variables are initialized to 0(zero).

g. Write the definition of the constructor with parameters of the class XClass so that the instance variable u is initialized to the value of a and the instance variable w is initialized to the value of b.

h. Write a Java statement that prints the values of the instance variables of x.

Answer :

public XClass()
{
this.u=0;
this.w=0;
}

i. Write a Java statement that creates the XClass object t and initializes the instance variables of t to 20 and 35.0,respectively.

Answer :

XClass t= new XClass();
t.u=20;
t.w=35.0;

For read more information on Java visit to :

http://www.roseindia.net/java/

Thanks



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