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Updated Parse Lib, Tiling Performance, Decimals & Trees

A small batch of news/updates
Updated Parse Lib, Tiling Performance, Decimals & Trees

Updated Parse Lib, Tiling Performance, Decimals & Trees

The excellent Parse4cn1 library just announced version 1.1. The biggest new feature is batch operations but there are a few others that could be helpful. Overall the library was pretty solid before the 1.1 version and this is a nice improvement on top.

Fabricio Cabeca contributed an interesting pull request that has the potential to improve performance nicely on most platforms. Hopefully we'll fix the issues in this approach and get it up again.

Steve reimplemented our BigDecimal & BigInteger based on the TeaVM implementation to make it more compliant to the Java SE version of these classes.

Expanding A Tree

A common request for the tree class is to open it when its already expanded. I recently had to do that myself for the GUI builder and noticed that one of the pain points is the fact that the Tree always animates expansion. So we added a new method that allows path expansion without animation specifically: expandPath(animated, path). This tree class shows itself expanded by default and can be useful for your app:

public class MyTree extends Tree {
    public MyTree(TreeModel model) {

    protected void initComponent() {

    public void expand() {
        Object current = null;
        Vector c = getModel().getChildren(current);
        if(c != null) {
            for(Object o : c) {
    private void recurseExpand(Object... path) {
        expandPath(false, path);
        if(getModel().isLeaf(path[path.length - 1])) {
        Vector ch = getModel().getChildren(path[path.length - 1]);
        if(ch != null) {
            Object[] arr = new Object[path.length + 1];
            for(int iter = 0 ; iter < path.length ; iter++) {
                arr[iter] = path[iter];
            for(Object o : ch) {
                arr[path.length] = o;
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Posted by Shai Almog

Shai is the co-founder of Codename One. He's been a professional programmer for over 25 years. During that time he has worked with dozens of companies including Sun Microsystems.
For more follow Shai on Twitter & github.