Programmatically compare Two java Source files in Eclipse PDE

Question

I am working on the Eclipse plugin where I want to compare two java source code. I am able to compare the two java code in text level. I have referred https://wiki.eclipse.org/FAQ_How_do_I_create_a_compare_editor%3F for comparing two codes. My code looks like:

    CompareItem ancestor = new CompareItem(file1);
    left = new CompareItem(file1);

    right = new CompareItem(file2);

    node = new DiffNode(null, Differencer.CONFLICTING, ancestor, left, right);

    return node;

My Compare Dialog looks like (figure 1):

How can I compare two files in source code level so that I get something like (figure 2): (with all the java formats.)

Answer 1

I got an answer. I wrote a class that implements ITypedElement. Overriding the getType() method of ITypedElement interface and returning "JAVA" does my work.

My class looks like the following:

public class CompareItem implements IStreamContentAccessor, ITypedElement, IModificationDate, IEditableContent{

    private File content;

    public static String newContents;

    public CompareItem(File left ) {
        content = left;
    }

    @Override
    public String getType() {
        return "JAVA";
    }
..}

1