How to compile multiple Java files?

To compile multiple Java files at once using the javac command, you can specify all the file names separated by spaces. Here’s how you can do it:

Method 1: Specifying Multiple Files

You can list all the Java files you want to compile in the command line:

javac File1.java File2.java File3.java

For example, if you have three Java files named ClassA.java, ClassB.java, and ClassC.java, you would compile them like this:

javac ClassA.java ClassB.java ClassC.java

Method 2: Using Wildcards

If you want to compile all Java files in a directory, you can use a wildcard (*):

javac *.java

This command will compile all .java files in the current directory.

Method 3: Compiling with Package Structure

If your Java files are organized in packages, you can compile them from the root of the package structure. For example:

javac com/example/*.java

This command compiles all Java files in the com/example package.

Note

When compiling multiple files, ensure that the files are in the correct order if there are dependencies between them. The Java compiler will handle dependencies automatically in many cases, but it's good practice to be aware of the order if there are specific dependencies.