DEV Community

Salad Lam
Salad Lam

Posted on

Array is object

Notice

I wrote this article and was originally published on Qiita on 19 September 2019.


Array class is defined in JVM

public class ArrayClassClassloader {

    public static void main(String[] args) {
        System.out.println(boolean[].class.getClassLoader());
    }

}
Enter fullscreen mode Exit fullscreen mode

Output

null
Enter fullscreen mode Exit fullscreen mode

This means that array class is load by bootstrap class loader

Name of array class

public class ArrayClassName {

    public static void main(String[] args) {
        System.out.println(boolean[].class.getName());
        System.out.println(short[].class.getName());
        System.out.println(int[].class.getName());
        System.out.println(long[].class.getName());
        System.out.println(float[].class.getName());
        System.out.println(double[].class.getName());
        System.out.println(char[].class.getName());
        System.out.println(byte[].class.getName());
        System.out.println();
        System.out.println(java.lang.Integer[].class.getName());
        System.out.println();
        System.out.println(int[][].class.getName());
        System.out.println(int[][][].class.getName());
        System.out.println(int[][][][].class.getName());
    }

}
Enter fullscreen mode Exit fullscreen mode

Output

[Z
[S
[I
[J
[F
[D
[C
[B

[Ljava.lang.Integer;

[[I
[[[I
[[[[I
Enter fullscreen mode Exit fullscreen mode

Image of Timescale

🚀 pgai Vectorizer: SQLAlchemy and LiteLLM Make Vector Search Simple

We built pgai Vectorizer to simplify embedding management for AI applications—without needing a separate database or complex infrastructure. Since launch, developers have created over 3,000 vectorizers on Timescale Cloud, with many more self-hosted.

Read more

Top comments (0)