arraylist in java .add code example
Example 1: how to add to an arraylist java
import java.util.ArrayList;
public class Details {
public static void main(String[] args) {
ArrayList<String> al= new ArrayList<String>();
al.add("Ram");
al.add("Shyam");
al.add("CPS");
al.add("John");
al.add("Steve");
System.out.println("Elements of ArrayList of String Type: "+al);
Example 2: Java arraylist if you don't want to use add()
public class MainActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
ListView myListView = (ListView) findViewById(R.id.myListView);
final ArrayList<String> myFriendsList = new ArrayList<String>(asList("Friend1", "Friend2", "Friend3", "Friend4", "Friend5"));
ArrayAdapter<String> friendsArrayAdapter = new ArrayAdapter<String>(this,
android.R.layout.simple_list_item_1, myFriendsList);
myListView.setAdapter(friendsArrayAdapter);
myListView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
Toast.makeText(MainActivity.this, myFriendsList.get(position), Toast.LENGTH_SHORT).show();
}
});
}
}