public PBProject(File projectFile, boolean isFramework) throws IOException { this.projectFile = projectFile; this.isFramework = isFramework;  if (projectFile == null) { throw new NullPointerException("Project file is null."); }  this.update();
public PBProject(boolean isFramework) throws IOException { this(new File("PB.project"), isFramework);
	public PBProject(File projectFile, boolean isFramework) throws IOException {		this.projectFile = projectFile;		this.isFramework = isFramework;		if (projectFile == null) {			throw new NullPointerException("Project file is null.");		}		this.update();	}