# How do you check if a Vector contains something?

## How do you check if a Vector contains something?

contains() method is used to check whether a specific element is present in the Vector or not. So basically it is used to check if a vector contains any particular element or not.

## How do you check if a value is present in a Vector in Java?

The contains() method of Java Vector class is used to check the vector which is in use contains the specified element or not. It returns true if this vector contains the specified element, otherwise returns false.

What is Vector method Java?

Vector is like the dynamic array which can grow or shrink its size. Unlike array, we can store n-number of elements in it as there is no size limit. It is a part of Java Collection framework since Java 1.2. It is found in the java.

### Is Vector deprecated in Java?

simply gr8. vector is not deprecated its a legacy class.

### How do you know if two vectors are equal?

By definition, two vectors are equal if and only if they have the same magnitude in the same direction. It can be seen from the figure that vector a and vector b are parallel and pointing in the same direction, but their magnitudes are not equal. Thus, we can conclude that the given vectors are not equal.

What is vector capacity in Java?

capacity() method in Java is used to get the capacity of the Vector or the length of the array present in the Vector. Syntax: Vector.capacity() Parameters: The method does not take any parameter.

## What are the Vector methods?

Methods in Vector Class

METHOD DESCRIPTION
capacity() Returns the current capacity of this vector.
clear() Removes all of the elements from this Vector.
clone() Returns a clone of this vector.
contains(Object o) Returns true if this vector contains the specified element.

## How do you create a Vector Vector in Java?

You can create a 2D Vector using the following:

1. Vector> vector2D = new Vector>(10); This will create a Vector of size 10 which will contain Vectors with Integer(Vector) values.
3. Vector rowVector = vector2D. get(2); rowVector.

What can I use instead of Vector in Java?

You should use ArrayList instead of Vector .

### Is Vector still used?

The Vector class is considered as a legacy class in Java. It was first introduced with JDK 1.0, and it was later retrofitted to implement the List interface. Even though it is now a member of the Java Collections Framework, it is rarely used in new projects and supported only for backward compatibility.

### How to search for an element in a vector in Java?

An element of a Vector can be searched using the method java.util.ArrayList.indexOf (). This method returns the index of the first occurrence of the element that is specified. If the element is not available in the Vector, then this method returns -1.

How to perform a binary search on a vector in Java?

In this article, we shall see a binary search operation on a vector. Binary search is a search technique in which a sorted array is repeatedly divided into half and the middle element is checked for the target element. To search a target element in a vector we will be using the binarySearch () method of the Collections class.

## What is a vector in Java?

Java Vector. Vector is like the dynamic array which can grow or shrink its size. Unlike array, we can store n-number of elements in it as there is no size limit. It is a part of Java Collection framework since Java 1.2. It is found in the java.util package and implements the List interface, so we can use all the methods of List interface here.

## How to check if a vector contains an object in Java?

The java.util.vector.contains() method is used to check whether a specific element is present in the Vector or not. So basically it is used to check if a vector contains any particular element or not. Syntax: Vector.contains(Object element) Parameters: This method takes a mandatory parameter element which is of the type of vector.