解释器模式（Interpreter Pattern）

public interface Expression {
    public abstract boolean interpret(String context);
}

public class TerminalExpression implements Expression {
    
    private String data;
    
    public TerminalExpression(String data) {
        this.data = data;
    }
    
    @Override
    public boolean interpret(String context) {
        if(context.contains(data)) {
            return true;
        }
        return false;

    }

}

public class OrExpression implements Expression {

    private Expression exp1;
    private Expression exp2;
    
    public OrExpression(Expression exp1, Expression exp2) {
        this.exp1 = exp1;
        this.exp2 = exp2;
    }
    
    @Override
    public boolean interpret(String context) {
        return exp1.interpret(context) || exp2.interpret(context);
    }

}

public class AndExpression implements Expression {

    private Expression exp1;
    private Expression exp2;
    
    public AndExpression(Expression exp1, Expression exp2) {
        this.exp1 = exp1;
        this.exp2 = exp2;
    }
    
    @Override
    public boolean interpret(String context) {
        return exp1.interpret(context) && exp2.interpret(context);
    }

}

public class Test {
    
    public static Expression getMaleExpression() {
        Expression robert = new TerminalExpression("robert");
        Expression john = new TerminalExpression("john");
        return new OrExpression(robert, john);
    }
    
    public static Expression getMarriedWomanExpression() {
        Expression julie = new TerminalExpression("Julie");
        Expression married = new TerminalExpression("Married");
        return new AndExpression(julie,married);
    }
    public static void main(String[] args) {
        Expression isMale = getMaleExpression();
        System.out.println(isMale.interpret("john"));
        
        Expression isMarriedWoman = getMarriedWomanExpression();
        System.out.println(isMarriedWoman.interpret("Married Julie"));
    }

}