Question

我正在尝试使用for循环打印出以下所有字符串以进入下面的println语句，但无法弄清楚如何让for循环来打印数组。我一直收到错误'找不到符号'。每个println语句后都会有一个扫描程序允许用户输入。

 public static void Real() {
    String[] sequence;
    sequence = new String[4];
    sequence[0] = ("first");
    sequence[1] = ("second");
    sequence[2] = ("third");
    sequence[3] = ("fourth");
    int number;
    for (number = 0; number <= sequence(); number++ ) {
        System.out.println("Input your " + sequence + " lap time");
    }
}

Answer 1

您的代码中存在一些语法错误，java中的方法名称也应该以低语录开头。

以下代码应该开展工作。

 public static void real() {
   String[] sequence;
   sequence = new String[4];
   sequence[0] = "first";
   sequence[1] = "second";
   sequence[2] = "third";
   sequence[3] = "fourth";
   int number;
   for (number = 0; number < sequence.length; number++ ) {
     System.out.println("Input your " + sequence[number] + " lap time");
   }
}

Answer 2

您不能仅通过在print语句中引用其名称来打印数组，您需要遍历每个索引处的所有元素和print元素。您可以使用语法 array [index] 访问元素。

您需要从0循环到最后一个索引，我认为您尝试从 sequence（）获取的是数组的大小。要获得数组的大小，您需要使用 array.length

所以你的代码应该是这样的：

public static void Real() { 
    String[] sequence; 
    sequence = new String[4];
    sequence[0] = ("first"); 
    sequence[1] = ("second"); 
    sequence[2] = ("third"); 
    sequence[3] = ("fourth"); 
    int number; 
    for (number = 0; number < sequence.length; number++) { 
        System.out.println("Input your " + sequence[number] + " lap time"); } }

Answer 3

使用number<sequence.length代替number <= sequence()

和

在 system.out.println（）

中使用sequence[number]代替sequence

Answer 4

public static void Real(String a[]) {
    String[] sequence;
    sequence = new String[4];
    Scanner input= new Scanner(System.in);

    sequence[0] = ("first");
    sequence[1] = ("second");
    sequence[2] = ("third");
    sequence[3] = ("fourth");
    int number;
    for (number = 0; number <4 ; number++ ) {
        System.out.println("Input your " + sequence[number] + " lap time");
        System.out.println("Input");
        variable = inupt.nextDatatype();
    }
}

这是我理解后的答案。我不知道顺序是顺序（）;

Answer 5

如何使用for-each循环？

for (String s : sequence)
            System.out.println("Input your " + s + " lap time");

如何创建一个for循环，以便在Java中按顺序打印字符串数组？

5 个答案: