Java only compiles the modified source files, not the entire file.

Question

Currently, maven is used to compile the code. Changing a Java file will cause the entire project to be recompiled. (There is currently a lot of redundant code in the project, and it takes a long time to compile it all.)

Does the background compilation tool have an automatic compilation function similar to Eclipse? Only the changed code will be compiled each time?

Answer 1

maven-compiler-plugin has a parameter useIncrementalCompilation that does not set the default fasle

<plugin>
    <artifactId>maven-compiler-plugin</artifactId>
    <version>${maven.compiler.version}</version>
    <configuration>
        <source>${java.version}</source>
        <target>${java.version}</target>
    </configuration>
    <useIncrementalCompilation>true</useIncrementalCompilation>
</plugin>