public String getExpressionString() {
        StringBuffer buf = new StringBuffer();
        buf.append("(");
        if (mOperator != null) {
            buf.append(mOperator.getOperatorSymbol());
            buf.append(" ");
        } else {
            for (int i = 0; i < mOperators.size(); i++) {
                UnaryOperator operator = (UnaryOperator) mOperators.get(i);
                buf.append(operator.getOperatorSymbol());
                buf.append(" ");
            }
        }
        buf.append(mExpression.getExpressionString());
        buf.append(")");
        return buf.toString();
    }
public String getExpressionString ( ) { StringBuffer buf = new StringBuffer ( ) ; buf . append ( "(" ) ; if ( mOperator != null ) { buf . append ( mOperator . getOperatorSymbol ( ) ) ; buf . append ( " " ) ; } else { for ( int i = 0 ; i < mOperators . size ( ) ; i ++ ) { UnaryOperator operator = ( UnaryOperator ) mOperators . get ( i ) ; buf . append ( operator . getOperatorSymbol ( ) ) ; buf . append ( " " ) ; } } buf . append ( mExpression . getExpressionString ( ) ) ; buf . append ( ")" ) ; return buf . toString ( ) ; }
Returns the expression in the expression language syntax