类字段的默认初始化

public class Main {  

  byte b;

  short s;
  /**
   from
  * 时代Java 
  **/

  int i;

  long l;

  float f;

  double d;

  boolean bool;

  String str;

  

  public static void main(String[] args) {

    // Create an object of DefaultInit class

    Main obj = new Main();

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

    // Print the default values for all instance variables

    System.out.println("byte is initialized to " + obj.l);

    System.out.println("short is initialized to " + obj.s);

    System.out.println("int is initialized to " + obj.i);

    System.out.println("long is initialized to " + obj.l);

    System.out.println("float is initialized to " + obj.f);

    System.out.println(