Print ArrayList Object

Question

I have created several objects and I want to print only one parameter of the objects in ArrayList:

Superhero batman = new Superhero("Bruce", 26, "Batman");
Human rachel = new Human("Rachel", 24);

Superhero ironman = new Superhero("Tony", 35, "Ironman");
Human pepper = new Human("Pepper", 22);

List<Human> people = new ArrayList<Human>();
people.add(batman);
people.add(rachel);
people.add(ironman);
people.add(pepper);

I want to print:

Bruce
Rachel
Tony
Pepper

Iterate over persons in list (access each single person in each iteration), for each person get its name and print it. Ask more specific question about this solution if you have problem with it. — Pshemo, Aug 12 '16 at 18:53
To go off of what Pshemo said iterate through the people list, and get the objects name. `for( Human human : people ) { System.out.println( human.getName() ); }` — Dominic, Aug 12 '16 at 18:56
In the future, please show your best good-faith attempt with your question -- else we won't know what you're doing wrong, else your question reads like a beg for code. — Hovercraft Full Of Eels, Aug 12 '16 at 18:56

score 2 · Answer 1 · answered Aug 12 '16 at 19:00

2

Before Java 8

for (Human human : people) {
    System.out.println(human.getName());
}

Starting from Java 8

people.stream().map(Human::getName).forEach(System.out::println);

answered Aug 12 '16 at 19:00

Nicolas Filotto

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score 1 · Accepted Answer · answered Aug 12 '16 at 18:54

1

for(Human human : people) {
    System.out.println(human.getName());
}

This should print name for each human in people list. You should have method in Human class:

getName() {
    return this.name;
}

answered Aug 12 '16 at 18:54

ByeBye

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Print ArrayList Object

2 Answers2