gistfile1.java

public class RequestExectutionView extends ViewPart{
	
TreeViewer myTreeViewer;
	...
public void createPartControl(Composite parent) {
	Tree myTree = new Tree(parent, SWT.BORDER | SWT.H_SCROLL | SWT.V_SCROLL);
		myTree.setHeaderVisible(true);
				  
		myTreeViewer = new TreeViewer(executionTree);
		myTreeViewer.setLabelProvider(new MyLabelProvider());
		myTreeViewer.setContentProvider(new ContentProvider());
		myTreeViewer..setInput(MyDataStore.getInstance());
	}
	...
}