IntelliJ IDEA 15 is a powerful Java integrated development environment (IDE), it offers advanced features for software, mobile, and web development. IntelliJ IDEA offers a wide range of sophisticated facilities that one-on-one is inspections feature which are integrated directly in the IDE. Inspections will provide advice and warnings when there is an error code (syntax error). So, you will be easily see and check the code that you have created, providing reports and descriptions about your codes and so on.