Question

The following program supposes to calculate the area of a rectangle and square. Then, produce the following output.

Area of Rectangle:
50

Unfortunately, the program has compile-time and run-time errors that prevent the program from running and producing the correct result. Using table 3.1 below, allocate the error(s) on each program line.

1 public class RectangleArea {  
2   Public static void main() {  
3     int width == 10;
4     int height = 5;
5     int recArea = width + height;
6      System.Out.print(Area of Rectangle:);
7      System.out.println(“recArea”)
8     
9

Note:

Some of the answers are given to you as an example.

Table 3.1: compile-time / run-time error

Line No	compile-time / run-time error
1	No error
2	Error. Public should be public Missing main methods parameters String args[]
3
4
5
6
7
8
9

Answer 1

Here is the correct program that will print the output to the screen as defined in the question.

public class RectangleArea {  
  public static void main(String args[]) {  
    int width = 10;
    int height = 5;
    int recArea = width * height;
System.out.println("Area of Rectangle:");
   System.out.println(recArea);
  }
}

SCREENSHOT OF THE OUTPUT AND THE CODE :

ERROR IN YOUR PROGRAM WITH EXPLIANATION:

public class RectangleArea {  
Public static void main() { //This line encounters an error as the keyword public "P" should be small and the //String args[ ] statement is missing here.
int width == 10; //here we need to assign but not to the compare but we are using comparision operators.So we // need to use assigment operator "=".
int height = 5; //here no error
int recArea = width + height; //here we need to use the formula(l*b) but (l+b) will not result ot the area.
System.Out.print(Area of Rectangle:); //here the syntax is not correct and the correct syntax is //"System.out.println" and also there is no variable Area of Rectangle //and we need to write it in " " as it will print to the output.
System.out.println(“recArea”) //here we show not use " " as we need to print the value of the //variable. and termination "semicolon " is missing here.
//and the cosing braces need to be here there should be 2 closing braces.