MyDependency.java

public class MyDependency {}

public class MyClass{
   private MyDependency dependency;
   
   //Bad! ex 1
   public MyClass(){
      dependency = new MyDependency();
   }
   
   //Good! ex 2
   public myClass(MyDependency myDependency){
      this.dependency = myDependency;
   }
}