JavaSE 动态初始化数组和默认值

    package array;
    
    public class ArrayDemo2 {
    
    
        public static void main(String[] args) {
    
    
            String[] city = new String[3];
            System.out.println(city[0]);
    
            int[] ages = new int[3];
            System.out.println(ages[0]);
    
            System.out.println("------");
            System.out.println(city);
            System.out.println(ages);
    
            // 字符数组的默认值是0 只不过打印不出来 通过强制类型转换可以看到
            char[] chars = new char[3];
            System.out.println(chars[0]);
            System.out.println((int)chars[0]);
    
            double[] scores = new double[3];
            System.out.println(scores[0]);
    
            boolean[] booleans = new boolean[2];
            System.out.println(booleans[0]);
            System.out.println(booleans[1]);
    
    
        }
    }