CarDIBasicExamples.java

// No DI
public class Car{
  
  private Motor motor;
  
  public Car(){
    motor = new ElectricMotor();
  }

}

// DI in Constructor
public class Car{
  
  private Motor motor;
  
  public Car(Motor motor){
    this.motor = motor;
  }

}

// DI in Setter
public class Car{
  
  private Motor motor;
  
  public Car(){
    
  }
  
  public void setMotor(Motor motor){
    this.motor = motor;
  }

}