Thread: Ask objects with parameters in Arraylist

I have a dog class type list which contains many objects of that class(many dogs each new object) with constructor input. For example list Dogs with type dog contains dog with weight, age, length: dog(30,5,100), dog(40,6,120). I want the program to print out all dogs with age 5.

I would think something like that, but cant figure it out.

 
public Dog askDogs(int age){                  //user enters requested age
		for(Dog d:Dogs){
			if(d.askAge()==age){         //I have method askAge() in dog class which returns integer			
		}
           }
           return Dogs;
   }

I know that I could use Dogs.get(); to print out certain object from list but I want to print out everything if that if statement is filled.

EDIT: It works now with that code. Anyway is there built in stuff that asks all object parameters(weight, mass, age) and how is it possible to remove these objects from list after program has showed them(after user requested them to see, dogs with age 5)?

public void askDogs(int age){                  //user enters requested age
		for(Dog d:Dogs){
			if(d.askAge()==age){         //I have method askAge() in dog class which returns integer	
                       System.out.println(d.askAge());		
		}
           }
   }

Okay, I wonder now how I can say that I have dog with age 5 in list. This one says sentence so many as I have that item in list. How can I look through list without using for loop than?

public void askDogs(int age){                  //user enters requested age
		for(Dog d:Dogs){
			if(d.askAge()==age){         //I have method askAge() in dog class which returns integer	
                       System.out.println("There is a dog in the list with that age");		
		}else{
                       System.out.println("There is not a dog in the list with that age");
                }
           }
   }

Possibly .contains method but I am not sure how to check if ask.Age()==age in that case.

	public void hasDog(int age){
		if (Dogs.contains(askAge()==age)){                                      ????????????????????
                   System.out.println("There is a dog in the list with that age");
	}else{
                   System.out.println("There is not a dog in the list with that age");
}
}