Search an element of Java Vector from specific index Example
- /*
- Search an element of Java Vector from specific index Example
- This Java Example shows how to search an element of java Vector from specific
- index using indexOf and lastIndexOf methods.
- */
- import java.util.Vector;
- public class SearchAnElementFromSpecificIndexVectorExample {
- public static void main(String[] args) {
- //create a Vector object
- Vector v = new Vector();
- //Add elements to Vector
- v.add("1");
- v.add("2");
- v.add("3");
- v.add("4");
- v.add("5");
- v.add("1");
- v.add("2");
- /*
- To search an index of specified element in Vector from specified index use
- int indexOf(Object element, int startIndex) method.
- This method returns the index of the first occurence of the specified
- element after startIndex in Vector. It returns -1 if not found.
- */
- int index = v.indexOf("1",4);
- if(index == -1)
- System.out.println("Vector does not contain 1 after index # 4");
- else
- System.out.println("Vector contains 1 after index # 4 at index #" + index);
- /*
- To get last index of specified element after specified index in Vector use
- int lastIndexOf(Object element, int startIndex) method.
- This method returns index of the last occurrence of the
- specified element after startIndex in Vector. It returns -1 if not found.
- */
- int lastIndex = v.lastIndexOf("2" , 5);
- if(lastIndex == -1)
- System.out.println("Vector does not contain 2 after index # 5");
- else
- System.out.println("Last occurrence of 2 after index # 5 in Vector
- is at index #" + lastIndex);
- }
- }
- /*
- Output would be
- Vector contains 1 after index # 4 at index #5
- Last occurrence of 2 after index # 5 in Vector is at index #1
- */
