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 parameter.
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:
// 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 initializing 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() method
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);
}
}
}
Output:
rule is :- < a < c & a < b
Example 2:
// 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 initializing 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() method
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);
}
}
}
Output:
rule is :- < a < b < c < d
Reference: https://docs.oracle.com/javase/9/docs/api/java/text/RuleBasedCollator.html#getRules--