constructor dependency injection java

Innocent Iguana answered on August 8, 2023 Popularity 7/10 Helpfulness 5/10

answer constructor dependency injection java

constructor dependency injection java

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public interface SomeInterface{
    public int someMethod();
}

public class Independent implements SomeInterface{
    @Override
    public int someMethod(){
        return 2; // Your logic
    }
}

public class Dependent{
    // "Independent" class will be replaced the interface it implements: "SomeInterface"
    private SomeInterface someObj; // NOT private Independent someObj;
    // Re-write constructor in a way that it takes an interface instead of a class
    public Dependent(SomeInterface someObj){
        this.someObj = someObj; // NOT "someObj = new Independent();"
    }

}

class Main {
  public static void main(String[] args) {
    var independentObj = New Independent();
    // Main class is acting as an injector class
    var dependentObj = New Dependent(independentObj);  // Injecting the "independentObj" inside Dependent's constructor
  }
}

Popularity 7/10 Helpfulness 5/10 Language java

Source: Grepper

Tags: constructor dependency-injection java

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Contributed on Aug 08 2023

Innocent Iguana

0 Answers Avg Quality 2/10

constructor dependency injection java

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