Collator getCollationKey() method in Java with Example

The getCollationKey() method of java.text.Collator class is used to get the series of bit converted from string passed into it.

Syntax:

public abstract CollationKey
       getCollationKey(String source)

Parameter: This method accepts the string object as a parameter.

Return Value: This method returns the series of bit converted from the string passed into it.

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



Example 1:

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// Java program to demonstrate
// getCollationKey() 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 sereis of bits
            // using getCollationKey() mehtod
            CollationKey key
                = col.getCollationKey("Geek");
  
            // display result
            System.out.println(
                "Series of bits are :- "
                + key.getSourceString());
        }
  
        catch (ClassCastException e) {
  
            System.out.println("Exception thrown : " + e);
        }
        catch (ParseException e) {
  
            System.out.println("Exception thrown : " + e);
        }
    }
}

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Output:

Series of bits are :- Geek

Example 2:

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// Java program to demonstrate
// getCollationKey() method
  
import java.text.*;
import java.util.*;
import java.io.*;
  
public class GFG {
    public static void main(String[] argv)
    {
        try {
  
            // Creating and initializing
            // Collator Object
            Collator col
                = Collator.getInstance(Locale.UK);
  
            // getting sereis of bits
            // using getCollationKey() mehtod
            CollationKey key
                = col.getCollationKey("CodeBlock");
  
            // display result
            System.out.println(
                "Series of bits are :- "
                + key.getSourceString());
        }
  
        catch (ClassCastException e) {
  
            System.out.println("Exception thrown : " + e);
        }
    }
}

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Output:

Series of bits are :- CodeBlock

Reference: https://docs.oracle.com/javase/9/docs/api/java/text/Collator.html#getCollationKey-java.lang.String-

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