Object oriented concepts UE Past Papers Questions.

What is the output of the following program ?
public class Watoto extends Wazazi{
public void doSomething(){
System.out.println("Parents care children");
}
}
public class Supplementary{
public static void main(String[]args){
Watoto c= new Wazazi();
c.doSomething();
}
}
class Watoto{
public void doSomething(){
System.out.println("Children cry");
}
}

Answer / Solution

Define this terms and provide an example.
Array and Multidimentional array.

Answer / Solution

Correct if there is any error and state what will be the output
public class Test2D{
public static void main(String[]args){
int[][]m={
{15,25,35},{35,45,50}
}
int sum;
sum=0;
for(int i=0;i<2;i++)
for(int j=0;j<2;j++)
sum+=m[i][j];
System.out.println(sum);
}
}

Answer / Solution

Java has three type of control structure discuss them and provide one example for each.

Answer / Solution

Differentiate betwween the following control loop if and nested if

Answer / Solution