Today we gonna create small project to calculate hsc marks.
package Oops;
import java.util.Scanner;
public class Hscmarkcalculator {
int noofsubject; int marks; int total;
public static void main(String[] args) {
// TODO Auto-generated method stub
Hscmarkcalculator hsc=new Hscmarkcalculator();
hsc.getmark();//method calling statement
hsc.Calculategrade();// method calling statement
}
private void Calculategrade() {//method Body
// TODO Auto-generated method stub
if(total>1000)
{
System.out.println(“A Grade”);
}
else if(total > 800)
{
System.out.println(“B Grade “);
}
else
{
System.out.println(“C Grade”);
}
}
private int getmark() {//method body
// TODO Auto-generated method stub
System.out.println(“Please enter number of subjects”);
Scanner scannerObj = new Scanner(System.in);
int len = scannerObj.nextInt();
int[] marks = new int[len];
total = 0;
for (int sub = 0; sub < len; sub++) {
System.out.println(“Please enter marks”);
marks[sub] = scannerObj.nextInt();
System.out.println(“You entered ” + marks[sub]);
total = total + marks[sub];
}
System.out.println(“Your total mark is ” + total);
return total;
}
}
result
Please enter number of subjects
6
Please enter marks
180
You entered 180
Please enter marks
190
You entered 190
Please enter marks
150
You entered 150
Please enter marks
160
You entered 160
Please enter marks
170
You entered 170
Please enter marks
178
You entered 178
Your total mark is 1028
A Grade
In the above program we create method calling and method body. Here we use the return type, that repeat the value where the method was calling.
Note:after return keyword line, below lines are not execueted.
Method calling
hsc.getmark();//method calling statement
hsc.Calculategrade();// method calling statement
Method body
private int getmark()
{
}
private void Calculategrade()
{
}
Object:
object is nothing but, combination of state and behaviour. And its a representative of class. The example of object
ex:man
state:tall,short, black skin,white skin, etc,.
behaviour:walk,run,jump etc,.
Class:
it gives an template or blueprint.and the class of no.of objects and methods.
It is a non primitive data type.
Method:
it is a Behaviour
Set of instructions with a name
Code Reusability
Member function
Smallest logical unit
void:
if we use void in method signature like
public static void main(String[] args)
it means nothing return.
Return:
if we use return we send the value where it was called.
Ex:
hsc.getmark()//method calling
private int getmark()// return type mention datatype
return // return the value
selvakrish 