Introduction to Programming

Static initialization block

As in the case of collections too, a static block can be used to initialize an array static property when some code has to be executed: 

class ManageArrays {private static A[] AS_STATIC;  static {    AS_STATIC = new A[2];    for(int i = 0; i< AS_STATIC.length; i++){        AS_STATIC[i] = new A();    }    AS_STATIC[0] = new A();    AS_STATIC[1] = new A();  }  //... the rest of class code goes here}

The code in the static block is executed every time a class is loaded, even before the constructor is called. But if the field is not static, the same initialization code can be placed in the constructor:

class ManageArrays {  private A[] as;  public ManageArrays(){    as = new A[2];    for(int i = 0; i< as.length; i++){        as[i] = new A();    }    as[0] =