how to remove from array list in java some element code example
Example 1: 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 2: 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);
}
}