Java Vector equals() Method with Examples

by Online Tutorials Library July 22, 2014

Java Vector equals() Method

The equals() method of Java Vector class used to compare the specified object with this Vector for equality. It returns true if and only if the specified object is also a list, both lists have the same size and all corresponding pairs of elements in the two lists are equal.

Syntax:

Following is the declaration of equals() method:

Parameter:

Parameter	Description	Required/Optional
o	It is the object to be compared for equality with the vector which is in use.	Required

Returns:

The equals() method returns true if the specified object is equal to this Vector, otherwise returns false.

Exceptions:

Compatibility Version:

Java 1.2 and above

Example 1:

  import java.util.*;  public class VectorEqualsExample1 {    public static void main(String arg[]) {      Vector<String> vec1 = new Vector<>();      vec1.add(“A”);      vec1.add(“B”);      vec1.add(“C”);      Vector<String> vec2 = new Vector<>();      vec2.add(“A”);      vec2.add(“B”);      System.out.println(“Is vector1 equals vector2 ? “+vec1.equals(vec2));      }              }  

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Output:

Is vector1 equals vector2 ? false

Example 2:

  import java.util.*;  public class VectorEqualsExample2 {    public static void main(String arg[]) {      Vector<Integer> vec1 = new Vector<>();      vec1.add(1);      vec1.add(2);      vec1.add(3);      Vector<Integer> vec2 = new Vector<>();      vec2.add(1);      vec2.add(2);      vec2.add(3);      System.out.println(“Is vector1 equals vector2 ? “+vec1.equals(vec2));      //Appending all elements      vec1.addAll(vec2);      //Printing the vector List      System.out.println(“Vector list: “+vec1);      }              }  

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Output:

Is vector1 equals vector2 ? true  Vector list: [1, 2, 3, 1, 2, 3]

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