Field variables of object types and the elements of arrays of object types are automatically initialized to the null value. : Member Variable « Java Source And Data Type « SCJP

1. SCJP
2. Java Source And Data Type
3. Member Variable

public class MainClass {

  public static void main(String[] argv) {
    MyClass myClass = new MyClass();
    for (float f : myClass.localVariables) {
      System.out.println(f);
    }

  }
}

class MyClass {
  public float[] localVariables = new float[3];

  public MyClass() {

  }

}