Java - 在构造函数中初始化数组

Question

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Syntax for creating a two-dimensional array in Java (13 个回答)

How do I declare and initialize an array in Java? (31 个回答)

已关闭 6 年前。

我想在构造函数中初始化二维数组。但是，当我在类中声明数组的实例变量时遇到问题。如果我这样做会出错:

public class Data {
private String [][] tabel;
public Data(){
    tabel = {{"ID", "NAME"},
             {"101", "Max"},
             {"102", "Mark"},
             {"103", "Downey"},
             {"104", "Matthew"},
             {"105", "Richard"}};
}

我该如何解决这个问题？

Answer 1

您需要在数组初始值设定项前面编写new Type[]，如下所示:

tabel = new String[][]{
            new String[]{"ID", "NAME"},
            new String[]{"101", "Max"},
            new String[]{"102", "Mark"},
            new String[]{"103", "Downey"},
            new String[]{"104", "Matthew"},
            new String[]{"105", "Richard"}};