Java编译器在第一次编译后不会编译所有子文件夹

Question

I have a problem with the java compiler.
The folders of my java project looks like this:

• main folder
  • delivery folder
    • Box.java
    • Factory.java
    • FragileBox.java
    • Supplier.java
  • test folder
    • Test.java
    • Test2.java
    • Test3.java
    • Test4.java
    • Test5.java
  • DeliveryTest.java

Clearly I have 2 packages aswell, a delivery package and a test package . It's a school project, so the test package was given, we had to write the delivery package which is tested by the test package .

The DeliveryTest.java looks like this:

import java.util.ArrayList;

import java.util.List;

import test.*;

import delivery.*;

public class DeliveryTest {

    public static void main(String[] args) {

        List<Test> tests = new ArrayList<Test>();
        tests.add(new Test2());
        tests.add(new Test3());
        tests.add(new Test4());
        tests.add(new Test5());

        int level = 1;

        for (Test test : tests) {
            if (test.test()) {
                ++level;
            }
        }
        System.out.println("Az elert szint: " + level);
    }
}

I really don't want to detail the work and the purpose of the code, I don't think it's relevant here.
My problem is that if I compile the DeliveryTest.java as javac DeliveryTest.java , it creates the class files, and successfully compiles, but: after the first compile, when all the class files created I make any changes on delivery package it won't compile again, only the test package , and after compiler finishes the compile it will just return as everything went well. It won't even create the class files again if I remove one of the class files from the delivery folder . However, the test package compiles fine after the first compile, it has no problem with that.
How can I achieve that I can compile the delivery package aswell after the first compile?

Thanks for any help

Answer 1

The Java compiler doesn't look around for files to compile. If you call it from the command line, you better use a call that names all Java files in their folders. Assuming that the main folder is your working directory,

javac DeliveryTest.java delivery/*.java test/*.java

If you don't change files in the test package you may not have to use the last parameter.