I am using Eclipse Neon for my java project, every time I do any changes to java code, it won't reflect after I save the file (for ex: a simple syso statement). I have to do maven clean and maven install my project then restarts the boot.
Add devtools dependency to your project in pom.xml (if spring boot project) :-
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
</dependency>
And enable Build Automatically in eclipse :-