java - 简单的Java数组问题

Question

为什么这个可以工作，而另一个会抛出错误:

import java.util.*;

//This works fine
public class ArrayTest {
    public static String[] names = {"James", "John", "Mark"};
    public static void main( String args[] ){
        System.out.print("Names: " + Arrays.toString(names));
    }
}

//But why does this not?
public class ArrayTest {
    public static String[] names = new String[3];
    names[0] = "James";
    names[1] = "John";
    names[2] = "Mark";
    public static void main( String args[] ){
        System.out.print("Names: " + Arrays.toString(names));
    }
}

Answer 1

尝试这样:

public class ArrayTest {
    public static String[] names;

    static
    {
        names = new String[3];
        names[0] = "James";
        names[1] = "John";
        names[2] = "Mark";
    }

    public static void main( String args[] ){
        System.out.print("Names: " + Arrays.toString(names));
    }
}