contains() Method : Java.util.ArrayList

Declaration :

public boolean contains(Object obj)

1	public boolean contains(Object obj)

Explanation :

Purpose	Method returns true if this list contains the specified element
Parameters	obj ==> The element whose presence in this list is to be tested
Return Value	True if this list contains the specified element
Exception	NA

Example

The following example shows the usage of java.util.Arraylist.contains(E) method.

package com.c4learn.arraylist;
import java.util.ArrayList;
public class ArrayListExamples {
  public static void main(String args[]) {
    // Create ArrayList 1
    ArrayList<String> arrlist1 = new ArrayList<String>(5);
    // Fill Elements in ArrayList 1
    arrlist1.add("A");
    arrlist1.add("B");
    arrlist1.add("C");
    // Check whether List contains "B"
    Boolean b1 = arrlist1.contains("B");
    if(b1 == true)
        System.out.println("Element present");
    else
        System.out.println("Element absent");
  }
}

package com.c4learn.arraylist;

import java.util.ArrayList;

public class ArrayListExamples {

public static void main(String args[]) {

// Create ArrayList 1

ArrayList<String> arrlist1 = new ArrayList<String>(5);

// Fill Elements in ArrayList 1

arrlist1.add("A");

arrlist1.add("B");

arrlist1.add("C");

// Check whether List contains "B"

Boolean b1 = arrlist1.contains("B");

if(b1 == true)

System.out.println("Element present");

else

System.out.println("Element absent");

}

Output :

Element present

1	Element present