CollationElementIterator previous() method in Java with Examples
The previous() method of java.text.CollationElementIterator class is used to get previous Collator element. This method push the iterator to the previous element and returns its value.
Syntax:
public int previous()
Parameter: This method does accepts any parameter.
Return Value: This method returns the value of the previous collator element.
Below are the examples to illustrate the previous() method:
Example 1:
// Java program to demonstrate previous() method  import java.text.*;import java.util.*;import java.io.*;  public class GFG {    public static void main(String[] argv)    {        // creating and initializing testString        String test = "abcd";          // creating and initializing        // RuleBasedCollator object        RuleBasedCollator rbc            = (RuleBasedCollator)(Collator.getInstance());          // creating and initializing        // CollationElementIterator        CollationElementIterator cel            = rbc.getCollationElementIterator(test);          // setting offset to index 4        cel.setOffset(3);          // display the result        System.out.println("current offset before"                           + " calling previous() "                           + cel.getOffset());          // getting offset of the previous collator element        // using previous() method        int value = cel.previous();          // display the result        System.out.println("\ncurrent element value after"                           + " calling previous() "                           + value);    }} |
Output:
current offset before calling previous() 3 current element value after calling previous() 5505024
Example 2:
// Java program to demonstrate previous() method  import java.text.*;import java.util.*;import java.io.*;  public class GFG {    public static void main(String[] argv)    {        // creating and initializing testString        String test = "abcd";          // creating and initializing        // RuleBasedCollator object        RuleBasedCollator rbc            = (RuleBasedCollator)(Collator.getInstance());          // creating and initializing        // CollationElementIterator        CollationElementIterator cel            = rbc.getCollationElementIterator(test);          // setting offset to index 2        cel.setOffset(2);          // display the result        System.out.println("current offset before"                           + " calling previous() "                           + cel.getOffset());          // getting offset of the previous collator element        // using previous() method        int value = cel.previous();          // display the result        System.out.println("\ncurrent offset after"                           + " calling previous() "                           + cel.getOffset());    }} |
Output:
current offset before calling previous() 2 current offset after calling previous() 1
Reference: https://docs.oracle.com/javase/9/docs/api/java/text/CollationElementIterator.html#next–
