在类中使用静态初始化器的示例

/*from 时 代 J a v a 公 众 号 - nowjava.com*/

public class Main {

  private static int num;

  

  // A static initializer. Note the use of the keyword static below.

  static {

    num = 1;

    System.out.println("Inside static initializer.");

  }


  // An instance initializer

  {   

    System.out.println("Inside instance initializer.");

  }


  // Constructor

  public Main() {

    System.out.println("Inside constructor.");

  }


  public static void main(String[] args) {

    System.out.println("Inside main() #1. num: " + num);
    /* 
    *来 自
     N o w J a v a . c o m - 时代Java
    */


    // Declare a reference variable of the class

    Main si; 


    System.out.println("Inside main() #2. num: " + num);


    // Create an object