1 Basic operators

// Q 1,2
public class MyClass {
    public static void main(String[] args) {
        System.out.println("Hello World");
        int a = 10, b = 5;
        // Using of +,-,*,/
        System.out.println("Sum = "+(a+b)+", Substraction = "+(a-b)+", Multiplication = "+(a*b)+", Division = "+(a/b));
        // + on strings
        String s1 = "Suresh" , s2 = " is a cool boy";
        System.out.println(s1+s2);
    }
}
/*
Hello World
Sum = 15, Substraction = 5, Multiplication = 50, Division = 2
Suresh is a cool boy
*/