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An interface can only contain constants and abstract methods.

Your program have an infinite loop, check your loop body. What counts the loop.

Check how other java programs main method looks like, then you get what's wrong with yours

Yeah. Cause you have a problem with your main method. Check your main method and see where you are wrong. The argument passed to your main method.

What are the errors get when you run the program

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Look at your main class.. And what your program doing.

Can u copy and paste the program. The part associated with the error. And the error u receive when you compile your program.
And remember use the code format when pasting your code

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Have you written the program, what error did you encountered show what you've done.

What error did you get when you try to run the program.

Code Deleted

There are lot of logic errors in your program.
(1). You are to print to the user to input there money, before calling the input.nextDouble() and the total variable already assigned...

When you print the name of the file. What was your output

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renameTo method return a true or false argument to tell you if the file was successfully renamed

Hi, kindly tell us, what error are you getting when you run the program.

Your datafield in the personal details class where not initialised.
And your program did not call the method you use to initialise the variable. That is the add_detail() method in the personal...

Yeah.. Mr greg you get what I was trying to insinuate . Just that the user input would be within the range of 1 - 13 and no other variables inclusive.
And I'm to find all possible solutions w, y,...

The problem is to write program that accept 4 number from user, and the number must be between 1 to 13 and the program find a solution or algebraic expression from the numbers supplied by the user...

Programming is fun, and you must really have a reason to move back to programming. i suggest the book head first to java. and please you really must come back to programming if it is what you love...

Hi im joseph,

im new to this forum.....

working on assignment called a Card Game...the program select four card images out of 52 card images ... find the solution for the possible algebraic...