Bug 89478 Linked per project settings: filter check box on by default
M6 test pass The filter check box should be on by default.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/preferences/ProjectSelectionDialog.java
});
		fTableViewer.addDoubleClickListener(new IDoubleClickListener() {
			public void doubleClick(DoubleClickEvent event) {
                okPressed();
			}
		});
		GridData data= new GridData(SWT.FILL, SWT.FILL, true, true);
		data.heightHint= SIZING_SELECTION_WIDGET_HEIGHT;
		data.widthHint= SIZING_SELECTION_WIDGET_WIDTH;
		fTableViewer.getTable().setLayoutData(data);
		fTableViewer.setLabelProvider(new JavaElementLabelProvider());
		fTableViewer.setContentProvider(new StandardJavaElementContentProvider());
		fTableViewer.setSorter(new JavaElementSorter());
		fTableViewer.getControl().setFont(font);
		Button checkbox= new Button(composite, SWT.CHECK);
		checkbox.setText(PreferencesMessages.getString("ProjectSelectionDialog.filter")); 
		checkbox.setLayoutData(new GridData(SWT.END, SWT.CENTER, true, false));
		checkbox.addSelectionListener(new SelectionListener() {
			public void widgetSelected(SelectionEvent e) {
				updateFilter(((Button) e.widget).getSelection());
			}
			public void widgetDefaultSelected(SelectionEvent e) {
				updateFilter(((Button) e.widget).getSelection());
			}
		});
		boolean doFilter= JavaPlugin.getDefault().getDialogSettings().getBoolean(DIALOG_SETTINGS_FILTER)
			&& !fProjectsWithSpecifics.isEmpty();
		checkbox.setSelection(doFilter);
		updateFilter(doFilter);