publicvirtualintIndexOf(object?value,intstartIndex); Parameters value Object TheObjectto locate in theArrayList. The value can benull. startIndex Int32 The zero-based starting index of the search. 0 (zero) is valid in an empty list.
The last occurrence of "the" between index 10 and index 5 is at index 10. */ Remarks The ArrayList is searched backward starting at the last element and ending at the first element. This method performs a linear search; therefore, this method is an O(n) operation, where n is Count....
*/intlastIndex = arrayList.lastIndexOf("1");if(lastIndex == -1) System.out.println("ArrayList does not contain 1");elseSystem.out.println("Last occurrence of 1 in ArrayList is at index :"+ lastIndex); } 开发者ID:tranleduy2000,项目名称:javaide,代码行数:47,代码来源:SearchAnElementIn...
Find the Index of an Array Element in Java - When working with arrays in Java, it is frequently essential to discover the record of a particular component inside the array. This record can be utilized to get to or control the component as required. In th
下面的例子展示了 java.util.ArrayList.indexOf() 方法的用法。 package com.tutorialspoint; import java.util.ArrayList; public class ArrayListDemo { public static void main(String[] args) { // create an empty array list with an initial capacity ArrayList<String> arrlist = new ArrayList<String>(5...
Java ArrayList indexOf() Method - The Java ArrayList indexOf(Object) method returns the index of the first occurrence of the specified element in this list, or -1 if this list does not contain the element. This method is used to search an element within
Example: Get the Last Occurrence of ArrayList Element import java.util.ArrayList; class Main { public static void main(String[] args) { // create an ArrayList ArrayList<String> languages = new ArrayList<>(); // insert element to the ArrayList languages.add("JavaScript"); languages.add("Pyth...
Java ArrayList indexOf() - In this tutorial, we will learn about the ArrayList indexOf() method, and learn how to use this method to find the index of an object/element in the ArrayList, with the help of examples.
importjava.util.ArrayList;publicclassIndexOfExample{publicstaticvoidmain(String[]args){ArrayList<String>al=newArrayList<String>();al.add("AB");al.add("CD");al.add("EF");al.add("GH");al.add("IJ");al.add("KL");al.add("MN");System.out.println("Index of 'AB': "+al.indexOf("...
In the above code fence, we first take a list namedMyValand also take an item which index we are going to find. Then we passed it toIntStreamto filter the elements and find the index of the element that we provided. We get the index if the item is in theMyVallist; otherwise, we...