Search an element of ArrayList - Java Collection Framework

Java examples for Collection Framework:ArrayList

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Description

Search an element of ArrayList

Demo Code

 
import java.util.ArrayList;
 
public class Main {
  public static void main(String[] args) {
    ArrayList arrayList = new ArrayList();
   //  w  w  w.  j  ava2 s  .  c o m
    arrayList.add("1");
    arrayList.add("2");
    arrayList.add("3");
    arrayList.add("4");
    arrayList.add("5");
    arrayList.add("1");
    arrayList.add("2");
 
    boolean blnFound = arrayList.contains("2");
    System.out.println("Does arrayList contain 2 ? " + blnFound);
 
    int index = arrayList.indexOf("4");
    if(index == -1)
      System.out.println("ArrayList does not contain 4");
    else
      System.out.println("ArrayList contains 4 at index :" + index);
     
    int lastIndex = arrayList.lastIndexOf("1");
    if(lastIndex == -1)
      System.out.println("ArrayList does not contain 1");
    else
      System.out.println("Last occurrence of 1 in ArrayList is at index :");
  }  
}

Result


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