Question

如何使用println打印一个包含另一个类中字符串的数组？我的意思是：

public class questions{

    public void QuestionDatabase(){

        String[] QuestionArray;
        QuestionArray = new String[2];

        QuestionArray[0] = ("What is a dog?");
        QuestionArray[1] = ("How many types of dogs are there?");

    }

}

在其他课程中，我想从那里抓住一个问题：

public class quiz{

    public static void main (String[] args){

       //Here is where I want to grab QuestionArray[0] and print to the screen.
        System.out.println("");

    }

}

Answer 1

从QuestionArray：

返回QuestionDatabase()

public String[] QuestionDatabase(){

    String[] QuestionArray;
    QuestionArray = new String[2];

    QuestionArray[0] = ("What is a dog?");
    QuestionArray[1] = ("How many types of dogs are there?");

    return QuestionArray;

}

然后像这样打印：

public class quiz{

public static void main (String[] args){

   //Here is where I want to grab QuestionArray[0] and print to the screen.
    System.out.println(new questions().QuestionDatabase()[0]);

 }

}

Answer 2

有几种方法可以做到这一点。可能最好的方法是在你的问题课中创建一个“getter”方法。此方法将简单地返回您创建的数组，如果您将该方法设为public，则可以从其他类访问它而不更改数组的值。例如：

public String[] getQuestionArray(){
    return QuestionArray;
}

在您的问题类中。

如何打印包含其他类字符串的数组？

2 个答案: