CODEWITHSUNDEEP
java-8java-stream
Joy
Joy

Reputation: 4483

Updating an attribute of an element in list with matching attribute

I am new to Java 8. I have a list of objects of class A, where structure of A is as follows:

class A {
   int name,
   boolean isActive
}

Now I have a list of elements L of class A, in that list I want to update an element having name="test" with inactive=false.

I can do this very easily by writing a for loop and creating a new list.

But how would I do that using Java 8 stream API?

Upvotes: 3

Views: 924

Answers (2)

pvpkiran
pvpkiran

Reputation: 27048

You can do it like this. 

L.stream()
.filter(item-> item.getName().equals("test"))
.forEachOrdered(a -> a.setActiv(false));

I believe data type of name should be String not int in your question

Upvotes: 3

Eugene
Eugene

Reputation: 120858

yourList.replaceAll(x -> {
    if(x.getName().equals("SomeName")){
        x.setIsActive(false);
        return x;
    }
    return x;
})

Upvotes: 0

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