Java 定义变量的数组

目前，我的代码如下所示：

public String Q1o1 = "oops";
public String Q1o2 = "oops";
public String Q1o3 = "oops";
public String Q1o4 = "oops";
public String Q1o5 = "oops";
public String Q1o6 = "oops";
public String Q1o7 = "oops";

public String Q2o1 = "oops";
public String Q2o2 = "oops";
public String Q2o3 = "oops";
public String Q2o4 = "oops";
public String Q2o5 = "oops";
public String Q2o6 = "oops";
public String Q2o7 = "oops";

public String Q3o1 = "oops";
public String Q3o2 = "oops";
public String Q3o3 = "oops";
public String Q3o4 = "oops";
public String Q3o5 = "oops";
public String Q3o6 = "oops";
public String Q3o7 = "oops";

public String Q4o1 = "oops";
public String Q4o2 = "oops";
public String Q4o3 = "oops";
public String Q4o4 = "oops";
public String Q4o5 = "oops";
public String Q4o6 = "oops";
public String Q4o7 = "oops";

public String Q5o1 = "oops";
public String Q5o2 = "oops";
public String Q5o3 = "oops";
public String Q5o4 = "oops";
public String Q5o5 = "oops";
public String Q5o6 = "oops";
public String Q5o7 = "oops";

public String Q6o1 = "oops";
public String Q6o2 = "oops";
public String Q6o3 = "oops";
public String Q6o4 = "oops";
public String Q6o5 = "oops";
public String Q6o6 = "oops";
public String Q6o7 = "oops";

public String[] optionvalues1 = {Q1o1, Q1o2, Q1o3, Q1o4, Q1o5, Q1o6, Q1o7};
public String[] optionvalues2 = {Q2o1, Q2o2, Q2o3, Q2o4, Q2o5, Q2o6, Q2o7};
public String[] optionvalues3 = {Q3o1, Q3o2, Q3o3, Q3o4, Q3o5, Q3o6, Q3o7};
public String[] optionvalues4 = {Q4o1, Q4o2, Q4o3, Q4o4, Q4o5, Q4o6, Q4o7};
public String[] optionvalues5 = {Q5o1, Q5o2, Q5o3, Q5o4, Q5o5, Q5o6, Q5o7};
public String[] optionvalues6 = {Q6o1, Q6o2, Q6o3, Q6o4, Q6o5, Q6o6, Q6o7};
public String[][] optionsarray = {optionvalues1,optionvalues2,optionvalues3,optionvalues4,optionvalues5,optionvalues6};

我是否可以定义数组中的字符串，这样代码就不会那么长

我认为我没有必要定义一个字符串，然后将其放入数组中。我不能将字符串定义为数组

所以基本上我的问题是，有没有办法缩短我的代码

你是说像这样吗

public String[][] optionsarray = {
        { "oops", "oops", "oops", "oops", "oops", "oops", "oops" },
        { "oops", "oops", "oops", "oops", "oops", "oops", "oops" },
        { "oops", "oops", "oops", "oops", "oops", "oops", "oops" },
        { "oops", "oops", "oops", "oops", "oops", "oops", "oops" },
        { "oops", "oops", "oops", "oops", "oops", "oops", "oops" },
        { "oops", "oops", "oops", "oops", "oops", "oops", "oops" } };

public String[][] optionsarray = new String[6][7];
{
    for (String[] row : this.optionsarray)
        Arrays.fill(row, "oops");
}

或者像这样

public String[][] optionsarray = {
        { "oops", "oops", "oops", "oops", "oops", "oops", "oops" },
        { "oops", "oops", "oops", "oops", "oops", "oops", "oops" },
        { "oops", "oops", "oops", "oops", "oops", "oops", "oops" },
        { "oops", "oops", "oops", "oops", "oops", "oops", "oops" },
        { "oops", "oops", "oops", "oops", "oops", "oops", "oops" },
        { "oops", "oops", "oops", "oops", "oops", "oops", "oops" } };

public String[][] optionsarray = new String[6][7];
{
    for (String[] row : this.optionsarray)
        Arrays.fill(row, "oops");
}

所以基本上我的问题是，有没有办法缩短我的代码

是的，如果字符串完全相同，则可以使用循环：

String[][] optionsarray = new String[6][7];
for (int i = 0; i < optionsarray.length; i++)
  for (int j = 0 ; j < optionsarray[i].length; j++)
    optionsarray[i][j] = "oops";

String[][]选项数组=新字符串[6][7]；
对于（int i=0；i

如果您知道要使用哪些字符串初始化2D数组，则只需执行以下操作即可

final String[][] example = { { "1", "2", "3" }, { "4", "5", "6" }, { "7", "8", "9" } };

---

你可以大大缩短它。例如：

public String[][] optionsarray = new String[6][7];

{
    for (String[] row : optionsarray) {
        Arrays.fill(row, "oops");
    }
}

---

它使用实例初始值设定项块，但您可以在构造函数（或其他地方）中使用初始化循环。

现在是使用类和集合的时候了

class Question{
    public List<String> options;
    public Question(){
        options=new ArrayList<>();
        options.add("oops");
        options.add("oops");
        options.add("oops");
        options.add("oops");
    }
}

课堂提问{
公开列表选项；
公众问题（{
选项=新的ArrayList（）；
选项。添加（“oops”）；
选项。添加（“oops”）；
选项。添加（“oops”）；
选项。添加（“oops”）；
}
}

然后去别的地方

List<Question> questions=new ArrayList<>();
questions.add(new Question());

List questions=new ArrayList（）；
添加（新问题（））；

现在，您可以将此

问题
对象发送到任何您想要的地方

这种方法更易于维护，冗余更少。
我正在其他地方更改值，“oops”只是一个占位符。请查看此问题的答案：这真的是你的问题吗？你在尝试做一些我无法想象的事情…为什么“哎呀”？默认值
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对我来说同样有意义。更新，@Andreas.Main这里的内容是变量名，我想保持这样？@JacquesCelliers“这还会在我的数组Q1o1、Q1o2等中吗…”不。如果你需要这些变量，你必须像以前那样编写它们。但我很有信心你不需要它们。这是因为如果更改数组中的值，变量中的值将保持不变，反之亦然。。。