Solve these problems in Java

R5.12 In a scheduling program, we want to check whether two appointments overlap. For simplicity, appointments start at a full hour, and we use military time (with hours 0-23). The following pseudocode describes an algorithm that determines whether the appointment with start time startl and end time end1 overlaps with the appoint- ment with start time start2 and end time end2. If startl> start2 start! Else s = start2 If endl