RuleBasedCollator getRules() method in Java with Example

The getRules() method of java.text.RuleBasedCollator class is used to get the rule which is used during the initialization of rule based collator object.

Syntax:

public String getRules()

Parameter: This method does not accept any argument as paramter.



Return Value: This method returns the rule which is used during the initialization of rule based collator object.

Below are the examples to illustrate the getRules() method:

Example 1:

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// Java program to demonstrate
// getRules() method
  
import java.text.*;
import java.util.*;
import java.io.*;
  
public class GFG {
    public static void main(String[] argv)
    {
        try {
  
            // Creating and initalizing new simple rule
            String simple = "< a < c & a < b";
  
            // Creating and initializing
            // new RuleBasedCollator Object
            RuleBasedCollator col
                = new RuleBasedCollator(simple);
  
            // getting rule of this object
            // using getRules() mehtod
            String rule = col.getRules();
  
            // display result
            System.out.println("rule is :- "
                               + rule);
        }
  
        catch (ClassCastException e) {
  
            System.out.println("Exception thrown : "
                               + e);
        }
        catch (ParseException e) {
  
            System.out.println("Exception thrown : "
                               + e);
        }
    }
}

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Output:

rule is :- < a < c & a < b

Example 2:

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// Java program to demonstrate
// getRules() method
  
import java.text.*;
import java.util.*;
import java.io.*;
  
public class GFG {
    public static void main(String[] argv)
    {
        try {
  
            // Creating and initalizing new simple rule
            String simple = "< a < b < c < d";
  
            // Creating and initializing
            // new RuleBasedCollator Object
            RuleBasedCollator col
                = new RuleBasedCollator(simple);
  
            // getting rule of this object
            // using getRules() mehtod
            String rule = col.getRules();
  
            // display result
            System.out.println("rule is :- "
                               + rule);
        }
  
        catch (ClassCastException e) {
  
            System.out.println("Exception thrown : "
                               + e);
        }
        catch (ParseException e) {
  
            System.out.println("Exception thrown : "
                               + e);
        }
    }
}

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Output:

rule is :- < a < b < c < d

Reference: https://docs.oracle.com/javase/9/docs/api/java/text/RuleBasedCollator.html#getRules–

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