Java Tutorial: Practice Questions on Java Methods

1. Write a Java method to print the multiplication table of a number n.
2. Write a program using functions to print the following pattern:

*
**
***
****

3. Write a recursive function to calculate the sum of first n natural numbers.
4. Write a function to print the following pattern:

****
***
**
*

5. Write a function to print the nth term of the Fibonacci series using recursion.
6. Write a function to find the average of a set of numbers passed as arguments.
7. Repeat problem 4 using Recursion.
8. Repeat problem 2 using Recursion.
9. Write a function to convert Celsius temperature into Fahrenheit.
10. Repeat problem 3 using an iterative approach.