ramadani

public void case11() {
    Map<Integer, String> users = new LinkedHashMap<Integer, String>();
    users.put(1, "Adimas Lutfi Wicaksono");
    users.put(2, "Salman Alfarisi");
    users.put(3, "Muhammad Sholeh");
    users.put(4, "Yadi Cahyadi");
    users.put(5, "Maya Maulani");

    users.values();
}

ramadani

public void case16() {
    ArrayList<String> users = new ArrayList<String>(Arrays.asList("Asep Dadang Supriadi", "Akmal Fuady",
            "Yandi Fitriyanto"));

    String usersNew = "Ricky Andika Putra";

    users.add(usersNew);

    System.out.println(users.toString());
}

ramadani

public void case17() {
    ArrayList<String> users = new ArrayList<String>(Arrays.asList("Asep Dadang Supriadi", "Akmal Fuady",
            "Yandi Fitriyanto"));

    String usersNew = "Ricky Andika Putra";

    users.add(0, usersNew);

    System.out.println(users.toString());
}

ramadani

public void case14() {
    ArrayList<User> users = new ArrayList<User>();
    users.add(new User(1, "Adimas Lutfi Wicaksono"));
    users.add(new User(2, "Salman Alfarisi"));
    users.add(new User(3, "Muhammad Sholeh"));

    ArrayList<User> usersNew = new ArrayList<User>();
    usersNew.add(new User(4, "Yadi Cahyadi"));
    usersNew.add(new User(5, "Maya Maulani"));

ramadani

public void case12() {
    ArrayList<User> users = new ArrayList<User>();
    users.add(new User(1, "Adimas Lutfi Wicaksono", 1));
    users.add(new User(2, "Salman Alfarisi", 1));
    users.add(new User(3, "Muhammad Sholeh", 1));
    users.add(new User(4, "Yadi Cahyadi", 1));
    users.add(new User(5, "Maya Maulani", 2));
}

private class User {

ramadani

public void case13() {
    ArrayList<User> users = new ArrayList<User>();
    users.add(new User(1, "Adimas Lutfi Wicaksono"));
    users.add(new User(2, "Salman Alfarisi"));
    users.add(new User(3, "Muhammad Sholeh"));

    ArrayList<User> usersDeleted = new ArrayList<User>();
    usersDeleted.add(new User(2, "Salman Alfarisi"));
    usersDeleted.add(new User(3, "Muhammad Sholeh"));

ramadani

@IgnoreExtraProperties
public class Note {

    private String uid;
    private String title;
    private String content;

    public Note() {
    }

ramadani

ValueEventListener valueEventListener = new ValueEventListener() {
    @Override
    public void onDataChange(DataSnapshot dataSnapshot) {
        ArrayList<Note> notes = new ArrayList<Note>();

        for (DataSnapshot noteSnapshot: dataSnapshot.getChildren()) {
            Note note = noteSnapshot.getValue(Note.class);
            notes.add(note);
        }

ramadani

public void create(String title, String content) {
    String key = mNoteRef.push().getKey();
    Note note = new Note(key, title, content);

    mNoteRef.child(key).setValue(note);
}

ramadani

package circle

import (
	"math"
)

type Circle struct {
	Radius float64
}