const int buzzerPin = 9;

void setup

{

pinmode(buzzer, OUTPUT);

}

void loop ()

{

for (int i = 200; i <= 800; i++)

{

tone (buzzerPin, i);

delay(5)

}

delay(3000);

for (int i = 800; i >=200, i--)

{

tone (buzzerPin, i);

delay(5);

}

}

123456789101112131415161718192021222324import java.util.Scanner;public class LeapYear{    public static void main(String[] args)    {        int lineCounter = 0;    for(int year=101; year <= 2100; year++)    {    if ((year % 4 == 0))    {        System.out.println(year + "");        lineCounter++;    {    if(lineCounter == 10)    }        System.out.println("");        lineCounter = 0;    }    }    }}X

class Test {

    public static void main (String [ ] args){

​

A a = new A("test");

​

a.print();//No "public class" found to execute

}

    }

​

class A {

String s;

​

A(String s) {

this.s=s;

}

​

private void print(){

System.out.println(s);

}

    }

mplement Method getPercentage that takes two inputs :

grade and totalGrade and outputs the grade percentage

as follows: percentage = (grade/total grade)*100 .

(Assume a student can not get a grade above 100%).

• In the main method use a scanner object to read the grade

and total grade from a text file then pass them to the

getPercentage method.

• The getPercentage method should through:

1. An IllegalArgumentException that is handled by its

caller in case If grade or total grade is a negative

number.

2. An ArithmeticException that is handled by its caller

in case If total grade is zero (division by zero)