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–
