4. What is IOC and DI?

What is IOC and DI?

Answer

  1. public class Employee{  
  2. Address address;  
  3. Employee(){  
  4. address=new Address();//creating instance  
  5. }  
  6. }  

Now, there is dependency between Employee and Address because Employee is forced to use the same address instance.

Let's write the IOC or DI code.

 
  1. public class Employee{  
  2. Address address;  
  3. Employee(Address address){  
  4. this.address=address;//not creating instance  
  5. }  
  6. }  

Now, there is no dependency between Employee and Address because Employee is not forced to use the same address instance. It can use any address instance.

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