We can use the remove() method of ArrayList container in Java to remove the last element. ArrayList provides two overloaded remove() method: remove(int index) : Accept index of the object to be removed. We can pass the last elements index to the remove() method to delete the last element.
Table of Contents
How do you remove the last element of a list in Java?
We can use the remove() method of ArrayList container in Java to remove the last element. ArrayList provides two overloaded remove() method: remove(int index) : Accept index of the object to be removed. We can pass the last elements index to the remove() method to delete the last element.
How do I remove the last element from a list?
We can use slicing to remove the last element from a list. The idea is to obtain a sublist containing all elements of the list except the last one. Since slice operation returns a new list, we have to assign the new list to the original list. This can be done using the expression l = l[:-1] , where l is your list.
How do you remove an element from a list in Java?
There are two remove() methods to remove elements from the List.
- E remove(int index): This method removes the element at the specified index and return it. The subsequent elements are shifted to the left by one place.
- boolean remove(Object o): This method removes the first occurrence of the specified object.
How do you remove the last element of a vector in Java?
Vector remove() Method in Java
- remove(int index) The java. util. vector. remove(int index) method is used to remove an element from a Vector from a specific position or index.
- remove(Object o) The java. util. vector. remove(Object o) method is used to remove any particular element from the Vector.
How do I remove the last index of a string in Java?
There are four ways to remove the last character from a string:
- Using StringBuffer. deleteCahrAt() Class.
- Using String. substring() Method.
- Using StringUtils. chop() Method.
- Using Regular Expression.
How do you remove the first element of an array in Java?
To remove first element of an Array in Java, create a new array with the size one less than the original array size, and copy the elements of original array, from index=1, to new array. Or, we can also use Arrays. copyOfRange() function to create a new array without the first element.
How do you remove the first element from a list?
How do I remove the first element from a list in Python?
- list.pop() – The simplest approach is to use list’s pop([i]) method which removes and returns an item present at the specified position in the list.
- list.remove() –
- Slicing –
- The del statement –
How do you delete an element from an array?
Logic to remove element from array
- Move to the specified location which you want to remove in given array.
- Copy the next element to the current element of array. Which is you need to perform array[i] = array[i + 1] .
- Repeat above steps till last element of array.
- Finally decrement the size of array by one.
How do I remove multiple elements from a list in Java?
2. Examples
- Remove multiple objects using List. removeAll method. If both are collection objects and we want to remove all element from another collection then removeAll can be used.
- Remove multiple objects using List. removeIf (Java 8)
- Remove multiple objects using Iterator (Java 7) Remove elements using Iterator.
How do you clear a vector in Java?
clear() method is used to remove all the elements from a Vector. Using the clear() method only clears all the element from the vector and does not delete the vector. In other words, we can say that the clear() method is used to only empty an existing vector.
How do you remove the last element of a string?