Collator setDecomposition() method in Java with Example

Last Updated : 04 Aug, 2021

The setdecomposition() method of java.text.Collator class is used to set the decomposition mode of this collator.
Syntax:

public void setDecomposition(int decompositionMode)

Parameter: This method takes the integer value as a parameter which represents the equivalent decomposition mode for this collator.
Return Value: This method has nothing to return.
Below are the examples to illustrate the setDecomposition() method:
Example 1:

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Java

// Java program to demonstrate
// setDecomposition() 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);
 
            // setting decomposition mode
            // into the Collator object
            // using setDecomposition() mehtod
            col.setDecomposition(
                Collator.CANONICAL_DECOMPOSITION);
 
            // getting decomposition mode
            int mode = col.getDecomposition();
 
            // display result
            if (mode == 0)
                System.out.println(
                    "decompostiton mode"
                    + " is :- NO_DECOMPOSITION");
            else if (mode == 1)
                System.out.println(
                    "decompostiton mode is"
                    + " :- CANONICAL_DECOMPOSITION");
            else
                System.out.println(
                    "decompostiton mode is "
                    + ":- FULL_DECOMPOSITION. ");
        }
 
        catch (ClassCastException e) {
 
            System.out.println("Exception thrown : " + e);
        }
        catch (ParseException e) {
 
            System.out.println("Exception thrown : " + e);
        }
    }
}

Output:

decompostiton mode is :- CANONICAL_DECOMPOSITION

Example 2:

Java

// Java program to demonstrate
// setDecomposition() 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);
 
            // setting decomposition mode
            // into the Collator object
            // using setDecomposition() mehtod
            col.setDecomposition(Collator.FULL_DECOMPOSITION);
 
            // getting decompostiton mode
            int mode = col.getDecomposition();
 
            // display result
            if (mode == 0)
                System.out.println(
                    "decompostiton mode"
                    + " is :- NO_DECOMPOSITION");
            else if (mode == 1)
                System.out.println(
                    "decompostiton mode is"
                    + " :- CANONICAL_DECOMPOSITION");
            else
                System.out.println(
                    "decompostiton mode is "
                    + ":- FULL_DECOMPOSITION. ");
        }
 
        catch (ClassCastException e) {
 
            System.out.println("Exception thrown : " + e);
        }
    }
}

Output:

decompostiton mode is :- FULL_DECOMPOSITION.

Reference: https://docs.oracle.com/javase/9/docs/api/java/text/Collator.html#setDecomposition-int-

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