Java ArrayList method Help

Hi, My current project is short term project 1 to 2 hours max. I need a Java developer to return a list of integers from an Arrraylist using a method return statement. Then assign the integers from the return method to a List in a different method. ex: method one reads the int values from the UI then collects the values within a method. method two collects the integer values from method one and performs a check to see if a certain value is present in the list.