[ACCEPTED]-How to get all imports defined in a class using java reflection?-dependencies

Accepted answer

Score: 18

I just wanna know the list of all import 4 defined in a class using reflection

You 3 can't because the compiler doesn't put them 2 into the object file. It throws them away. Import 1 is just a shorthand to the compiler.

Score: 16

Imports are a compile-time feature - there's 9 no difference to the compiled code between 8 a version which uses the full name of the 7 type everywhere it's mentioned, a version 6 which imports everything using a *, and 5 a version which imports classes by full 4 name.

If you want to find all the types used within 3 the compiled code, that's a slightly different 2 matter. You may want to look at BCEL as a way 1 of analyzing bytecode.

Score: 8

I think you can use Qdox to get all the imports 3 in a class which is not actually through 2 reflection, but it can serve your purpose 1 :

    String fileFullPath = "Your\\java\\ file \\full\\path";
    JavaDocBuilder builder = new JavaDocBuilder();
    builder.addSource(new FileReader( fileFullPath  ));

    JavaSource src = builder.getSources()[0];
    String[] imports = src.getImports();

    for ( String imp : imports )
    {
        System.out.println(imp);
    }

Score: 0

As suggested by @Asraful Haque qdox helps 2 to read imports of java file

Use Maven dependency

        <dependency>
            <groupId>com.thoughtworks.qdox</groupId>
            <artifactId>qdox</artifactId>
            <version>2.0.1</version>
        </dependency>

Please 1 refer modified version of code

package readimports;

import java.io.FileNotFoundException;
import java.io.FileReader;
import java.util.Collection;
import java.util.List;

import com.thoughtworks.qdox.JavaProjectBuilder;
import com.thoughtworks.qdox.model.JavaSource;

public class TestReadAllImport {

    public static void main(String[] args) throws FileNotFoundException {
        String fileFullPath = "path to java file";
        JavaProjectBuilder builder = new JavaProjectBuilder();
        builder.addSource(new FileReader( fileFullPath  ));

        Collection<JavaSource> srcs = builder.getSources();
        for(JavaSource src : srcs) {
            List<String> imports = src.getImports();

            for ( String imp : imports )
            {
                System.out.println(imp);
            }
        }
    }

}

Source: stackoverflow.com

[ACCEPTED]-How to get all imports defined in a class using java reflection?-dependencies

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