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–
