OrExpression.java

public class OrExpression extends Expression {

    Expression leftOperand;
    Expression rightOperand;

    public OrExpression(Expression leftEx, Expression rightEx) {
        this.leftOperand = leftEx;
        this.rightOperand = rightEx;

    }

    public boolean evaluate(boolean[] array) {
        boolean leftValue = leftOperand.evaluate(array);
        boolean rightValue = rightOperand.evaluate(array);

        return leftValue || rightValue;
    }
}