JAVA GET API - 二维数组，无法检索？

Question

我通过这样的 API 获取数据变量(注意方括号):

[
    ["2018-09-03",287.5,289.8,286.15,287.3,287.65,1649749.0,4750.35],
    ["2018-08-31",286.25,290.5,285.0,285.5,285.95,3716997.0,10691.41],
    ["2018-08-30",286.45,290.55,284.6,286.05,285.6,3861403.0, 11097.03]
]

我在下面的脚本中做错了什么？我是 Java 新手，需要在表中打印这个 block 。请帮助我，提前致谢

public class ArrayLoopTest{

     public static void main(String []args){
         String[] data = new String[
            ["2018-09-03",287.5,289.8,286.15,287.3,287.65,1649749.0,4750.35],
            ["2018-08-31",286.25,290.5,285.0,285.5,285.95,3716997.0,10691.41],
            ["2018-08-30",286.45,290.55,284.6,286.05,285.6,3861403.0, 11097.03]
        ];
        for (i=0;i < data.length;i++) {
            System.out.println(data[i]);
        }
     }
}

Answer 1

欢迎来到java世界。

这里有一些你似乎做得不好的事情，因为你知道java是一种强类型语言。但是，从您的代码中，您在数组中使用了 float 。也许您已经声明您的数组将仅包含字符串。

更重要的是，您没有以正确的方式声明您的数组。 我建议您快速完成本教程 Arrays in java .

但是要解决您的问题，您可以这样做

p

ublic static void main(String []args){
            String[][] data = new String[][]{

                {"2018-09-03","287.5","289.8","286.15","287.3","287.65","1649749.0","4750.35"},
                    {"2018-09-03","287.5","289.8","286.15","287.3","287.65","1649749.0","4750.35"},
                    {"2018-09-03","287.5","289.8","286.15","287.3","287.65","1649749.0","4750.35"},

            };



            for (int i=0;i < data.length;i++) {
                    for (int j = 0; j < data[i].lenght(); i++){
`                        System.out.print(data[i][j] + "  ");
                      }
                      System.out.println("--------------")


            }
        }