The following code to compare two strings is compiled, the following syntax error was displayed – incompatible types – int cannot be converted to boolean.

Identify the statement which has the error and write the correct statement. Give the output of the program segment.

void calculate()
{
String a = "KING", b = "KINGDOM";
boolean x = a.compareTo(b);
System.out.println(x);
}

Consider the given program and answer the questions given below:

class temp
{
 int a;
 temp()
 {
 a=10;
 }
 temp(int z)
 {
 a=z;
 }
 void print()
 {
 System.out.println(a);
 }
 void main()
 {
 temp t = new temp();
 temp x = new temp(30);
 t.print();
 x.print();
}
}

(a) What concept of OOPs is depicted in the above program with two constructors?

(b) What is the output of the method main()?

DTDC a courier company charges for the courier based on the weight of the parcel. Define a class with the following specifications:

Class name: courier

Member variables:

name – name of the customer

weight – weight of the parcel in kilograms

address – address of the recipient

bill – amount to be paid

type – 'D'- domestic, 'I'- international

Member methods:

void accept ( ) — to accept the details using the methods of the Scanner class only.

void calculate ( ) — to calculate the bill as per the following criteria:

Weight in Kgs	Rate per Kg
First 5 Kgs	Rs.800
Next 5 Kgs	Rs.700
Above 10 Kgs	Rs.500

An additional amount of Rs.1500 is charged if the type of the courier is I (International)

void print ( ) — To print the details

void main ( ) — to create an object of the class and invoke the methods

Define a class to overload the method perform as follows:

double perform (double r, double h) — to calculate and return the value of curved surface area of cone

$CSA = \pi rl \quad l = \sqrt{r^2 + h^2}$

void perform (int r, int c) — Use NESTED FOR LOOP to generate the following format

r = 4, c = 5

output
1 2 3 4 5
1 2 3 4 5
1 2 3 4 5
1 2 3 4 5

void perform (int m, int n, char ch) — to print the quotient of the division of m and n if ch is Q else print the remainder of the division of m and n if ch is R