overlap radius... help me..

Write a program that prompts the user to enter the center coordinates and radius of two circles and determines whether the second circle is inside the first or overlaps with the first.
Hint: circle2 is inside circle1 if the distances between the two centers
<=|r1 – r2|

circle2 overlaps circle1 if the distance between the two centers
<=|r1 + r2|


So i have found the correct formula but dont know how to write the coding. Can someone help me....
circle2 is inside circle1 if:
distance(x1,y1,x2,y2) <= Math.abs(r1-r2)

circle2 overlaps circle1 if:
distance(x1,y1,x2,y2) <= Math.abs(r1+r2

See forum rule 1.5 No homework assignments - Do not post your entire homework assignment and request that other members do it for you. This is considered cheating, and your thread may even be used by your school to prove your guilt. Now, you may ask for advice or help on a specific aspect of your assignment that you're having trouble with. Use common sense as far as what's acceptable in terms of soliciting help with homework assignments.

In short, you must make an efort to write the necessary code yourself, and then if you are still having problems I am sure someone will corrcet/improve it for you.