Question

我编写了一个程序，当按下按钮一次时，将一个随机单词及其定义打印到文本字段。我想让它在重复按下按钮时打印另一个随机字和定义。有任何想法吗？我是编码的新手，所以请考虑到这一点。

这是我到目前为止所做的：

<div class="checkbox">
   <input id="check1" type="checkbox" name="check" />
   <label for="check1"><span class="chk-text">Checklist One<span></label>
     <br>
   <input id="check2" type="checkbox" name="check" checked>
   <label for="check2"><span class="chk-text">Checklist two<span></label>
     <br>
   <input id="check3" type="checkbox" name="check">
   <label for="check3"><span class="chk-text">Checklist three<span></label>
   </div> <!-- END OF CHECKBOX -->
   <button class="add-item" type="button">Add</button>
</div> <!-- END OF ADD-ITEM -->

<div class="checkbox">
   <input id="check1" type="checkbox" name="check" />
   <label for="check1"><span class="chk-text">Checklist One<span></label>
     <br>
   <input id="check2" type="checkbox" name="check" checked>
   <label for="check2"><span class="chk-text">Checklist two<span></label>
     <br>
   <input id="check3" type="checkbox" name="check">
   <label for="check3"><span class="chk-text">Checklist three<span></label>
   </div> <!-- END OF CHECKBOX -->
   <button class="add-item" type="button">Add</button>
</div> <!-- END OF ADD-ITEM -->

}

Answer 1

您正在选择构造函数中的随机单词和定义。单击鼠标（在actionPerformed方法内）时，必须更改此选项以选择随机单词和定义。

试试这个：

public RandomWord(){
    super("Cool Words -1.5");
    setLayout(new FlowLayout());

    wordField = new JTextField("Petrichor",20);
    add(wordField);
    defField = new JTextField("The smell of earth after rain",20);
    add(defField);
    nextButton = new JButton("Next");
    add(nextButton);

    nextButton.addActionListener(new ActionListener() {

        public void actionPerformed(ActionEvent arg0) {

            // this method is executed when you clicked;
            // The random word and definition must be choose at this moment.
            int idx = new Random().nextInt(words.length);
            wordField.setText(words[idx];);
            defField.setText(def[idx]);

        }
    });
}

Answer 2

尝试删除字符串中的final关键字。 Final表示在声明后不能更改String值：

   String randomWord = words[idx];

   String randomDef = def[idx];

如何使我的按钮选择一个随机的单词然后再次

2 个答案: