Write a program using while loop in java

If you find difficult to understand the for loop, please refer For Loop article here:

Write a program using while loop in java

You need to do these exercises by yourself. Writing Good Programs The only way to learn programming is program, program and program. Learning programming is like learning cycling, swimming or any other sports. Start to program immediately. On the other hands, to improve your programming, you need to read many books and study how the masters program.

It is easy to write programs that work. It is much harder to write programs that not only work but also easy to maintain and understood by others — I call these good programs.

In the real world, writing program is not meaningful. You have to write good programs, so that others can understand and maintain your programs. Pay particular attention to: Read "Java Code Convention" http: Use camel-case for names. Variable and method names begin with lowercase, while class names begin with uppercase.

Use nouns for variables e. Use verbs for methods e. Do not use names like a, b, c, d, x, x1, x2, and x Avoid single-alphabet names like i, j, k. They are easy to type, but usually meaningless.

Use single-alphabet names only when their meaning is clear, e. Use meaningful names like row and col instead of x and y, i and j, x1 and x2numStudents, maxGrade, size, and upperbound. Differentiate between singular and plural nouns e.

Use consistent indentation and coding style. Use a a "nested-if" statement; b a "switch-case" statement. Write a program called SumAndAverage to produce the sum of 1, 2, 3, Also compute and display the average.

The output shall look like: The sum is The average is Modify the program to use a "while-do" loop instead of "for" loop. What is the difference between "while-do" and "do-while" loops?

Modify the program to sum from toand compute the average. Introduce an int variable called count to count the numbers in the specified range.

Modify the program to sum those numbers from 1 to that is divisible by 7, and compute the average. Modify the program to find the "sum of the squares" of all the numbers from 1 toi.

Write a program called Product1ToN to compute the product of integers 1 to 10 i. Try computing the product from 1 to 11, 1 to 12, 1 to 13 and 1 to Write down the product obtained and explain the results.May 04,  · Here we will talk about the "Factorial Using While Loop" Java program.

write a program using while loop in java

This Java program shows how to calculate the factorial of a given number using while Loop In Java. Factorial using while loop. This is because condition is i>1 which would always be true as we are incrementing the value of i inside while loop.

Here is another example of infinite while loop: while (true){ statement(s); } Example: Iterating an array using while loop. Here we are iterating and displaying array elements using while loop. I am writing a program that uses a while loop to determine the largest number input so far. I have to input 10 numbers in whole.

At the end of the loop, it should output the largest number. The difference between do-while and while is that do-while evaluates its expression at the bottom of the loop instead of the top. Therefore, the statements within the do block are always executed at least once, as shown in the following DoWhileDemo program.

Above program is an ‘infinite’ loop. That is ‘while’ loop will keep running for infinite time. But in the program, if you change the value of ‘i’ inside the ‘while’ function, it will exit. Java Loops & Methods.

The while loop. Syntax: while (condition is true) { So what if you accidentally write an infinite loop in your program? Everyone does at some point! Often your only clue is lines of output streaming by on the Console or you see nothing • If the loop might need to be skipped, use a while loop.

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