I've been having trouble understanding these codes in my compsci class (particularly the challenge problems) and I wanted someone to complete the programs for me but use comments to explain what each line of code is doing so that I can study it for the future.

MUST BE IN JAVA

Program 1 1)Write the code to display the content below The program Name is Half_XmasTree. This program MUST use (ONLY) for loops to display the output below from 1 to 10..1st row prints 10 star 2nd row prints 9... 3rd print 8 stars and so forth This program is controlled by the user to input the amount of row. A good test condition is the value of ten rows The user will demand the size of the tree A good test condition is the value of ten rows Remember the purpose of print() and println() Expected Output for Program 1: * ** *