java remove from arraylist code example

Example 1: ArrayList removeIf() method in java

import java.util.ArrayList;
public class ArrayListRemoveIfMethodExample
{
   public static void main(String[] args)
   {
      ArrayList<Integer> al = new ArrayList<Integer>();
      al.add(15);
      al.add(8);
      al.add(58);
      al.add(19);
      // remove numbers divisible by 2
      al.removeIf(n -> (n % 2 == 0));
      // print list
      for(int a : al)
      {
         System.out.println(a);
      }
   }
}

Example 2: How to remove element from arraylist in java

// Java.util.ArrayList.remove(Object) method example
import java.util.ArrayList;
import java.util.List;
public class ArrayListRemoveObjectMethod
{
   public static void main(String[] args)
   {
      List<Integer> al = new ArrayList<>();
      al.add(56);
      al.add(28);
      al.add(39);
      al.add(59);
      al.add(82);
      System.out.println("Before using ArrayList.remove(Object) method size of ArrayList: " + al);
      // removes element 56
      al.remove(new Integer(56));
      // removes element 28
      al.remove(new Integer(28));
      System.out.println("After using ArrayList.remove(Object) method size of ArrayList: " + al);
   }
}

Example 3: remove item from arraylist in java

//Create the ArrayList
List<Integer> al = new ArrayList<>(); 
//Add the items
al.add(10);
al.add(18);
//Remove item(1 = 2and item in list)
al.remove(1);

Example 4: java arraylist remove

//create ArrayList
ArrayList<String> arrayList = new ArrayList<String>();
//add item to ArrayList
arrayList.add("item");
//check if ArrayList contains item (returns boolean)
System.out.println(arrayList.contains("item"));
//remove item from ArrayList
arrayList.remove("item");

Example 5: How to remove element from arraylist in java

// java program on ArrayList remove(int index) method example
import java.util.ArrayList;
import java.util.List;
public class ArrayListRemoveIndex
{
   public static void main(String[] args)
   {
      List<Integer> al = new ArrayList<>();
      al.add(56);
      al.add(28);
      al.add(39);
      al.add(59);
      al.add(82);
      System.out.println("Before using ArrayList.remove(int index) method: " + al);
      // removes element 28
      al.remove(1);
      // element 39 is now moved one position back
      // So element 39 is removed
      al.remove(1);
      System.out.println("After using ArrayList.remove(int index) method: " + al);
   }
}

Example 6: arraylist remove method java

public E remove(int index)	// returns removed element at index