Hello,

what tool provide an help to transform copies of source code into calls
to one common method in java?

Example:

* original

public void drawCellSmooth(int w, int h) {
    if (w < 3 || h < 3)
        return;

    ...
}

public void drawCellNormal(int w, int h) {
    if (w < 3 || h < 3)
        return;

    ...
}

* result

private boolean checkWidthHeight(int w, int h) {
    return (w < 3 || h < 3);
}

public void drawCellSmooth(int w, int h) {
    if (checkWidthHeight(w, h))
        return;

    ...
}

public void drawCellNormal(int w, int h) {
    if (checkWidthHeight(w, h))
        return;

    ...
}

Other features are searched:
* detection of all the similar number to transform them into constants
* detection of same source code
* detection of almost same source code
    - variable name are different
    - the code is not exactly the same
* similar class which should be integrated into a hirarchy
* etc...

Any help appreciated