Program
import java.util.ArrayList;
public class ArrayObjectRemove
{
public static void main(String[] args)
{
ArrayList<String> animals=new ArrayList<String>();
animals.add("dog");
animals.add("cat");
animals.add("cow");
animals.add("lion");
animals.add("tiger");
animals.add("pig");
System.out.println("Arraylist before removing object:");
for(String var1:animals)
{
System.out.println(var1);
}
animals.remove("pig");
boolean b=animals.remove("cat");
System.out.println("cat is removed :"+ b);
System.out.println("Arraylist after removing object");
for(String var2:animals)
{
System.out.println(var2);
}
}
}Output
Arraylist before removing object: dog cat cow lion tiger pig cat is removed:true Arraylist after removing object: dog cow lion tiger
Description
boolean remove(Object o)
Removes a single instance of the specified element from this collection, if it is present (optional operation). More formally, removes an element e such that (o==null ? e==null : o.equals(e)), if this collection contains one or more such elements. Returns true if this collection contained the specified element (or equivalently, if this collection changed as a result of the call).
Parameters:
o – element to be removed from this collection, if present
Returns:
true if an element was removed as a result of this call
Throws:
ClassCastException – if the type of the specified element is incompatible with this collection (optional)
NullPointerException – if the specified element is null and this collection does not permit null elements (optional)
UnsupportedOperationException – if the remove operation is not supported by this collection
