public BooleanEvaluator( HashMap symbols ) { if (symbols == null) { throw new NullPointerException("Got invalid symbols: [null]."); } this.symbols = symbols;
public BooleanEvaluator( HashMap symbols, HashMap variables ) { setEnvironment(symbols, variables);
	public BooleanEvaluator( HashMap symbols ) {		if (symbols == null) {			throw new NullPointerException("Got invalid symbols: [null].");		} 		this.symbols = symbols;	}