ChoiceFormat setChoices() method in Java with Examples

Last Updated : 16 Dec, 2019

The setChoices() method of java.text.ChoiceFormat class is used to set the new Choice item with a defined limit and format in Choiceformat object.

Syntax:

public void setChoices(double[] limits, String[] formats)

Parameter: This method takes the following parameters:

limits: which is the array of double values which will contain limit for choiceitem.
format: which is the array of string values which will contain the format for choiceitem.

Return Value: This method does not return anything.

Exception: This method throws NullPointerException if limit or format is null.

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

Example 1:

// Java program to demonstrate 
// setChoices() method 
  
import java.text.*; 
import java.util.*; 
import java.io.*; 
  
public class GFG { 
    public static void main(String[] argv) 
    { 
        try { 
  
            // creating and initializing ChoiceFormat 
            ChoiceFormat cf1 
                = new ChoiceFormat( 
                    "4#wed| 5#thu | 6#fri | 7#sat"); 
  
            // creating and initializing new double array 
            double[] newlimit = { 1, 2, 3 }; 
  
            // creating and initializing new String array 
            String[] newformat = { "sun", "mon", "tue" }; 
  
            // setting the limit and format in 
            // ChoiceFormat Object 
            // using setChoices() method 
            cf1.setChoices(newlimit, newformat); 
  
            // display the result 
            System.out.print("updated Choiceformat object: "
                             + cf1.toPattern()); 
        } 
        catch (NullPointerException e) { 
            System.out.println("\nLimit or Format is null"); 
            System.out.println("Exception thrown: " + e); 
        } 
    } 
} 

Output:

updated Choiceformat object: 1.0#sun|2.0#mon|3.0#tue

Example 2:

// Java program to demonstrate 
// setChoices() method 
  
import java.text.*; 
import java.util.*; 
import java.io.*; 
  
public class GFG { 
    public static void main(String[] argv) 
    { 
        try { 
  
            // creating and initializing ChoiceFormat 
            ChoiceFormat cf1 
                = new ChoiceFormat( 
                    "4#wed| 5#thu | 6#fri | 7#sat"); 
  
            // creating and initializing new double array 
            double[] newlimit = null; 
  
            // creating and initializing new String array 
            String[] newformat = { "sun", "mon", "tue" }; 
  
            // setting the limit and format in 
            // ChoiceFormat Object 
            // using setChoices() method 
            cf1.setChoices(newlimit, newformat); 
  
            // display the result 
            System.out.print("updated Choiceformat object: "
                             + cf1.toPattern()); 
        } 
        catch (NullPointerException e) { 
            System.out.println("Limit or Format is null"); 
            System.out.println("Exception thrown: " + e); 
        } 
    } 
} 

Output:

Limit or Format is null
Exception thrown: java.lang.NullPointerException

Reference: https://docs.oracle.com/javase/9/docs/api/java/text/ChoiceFormat.html#setChoices-double:A-java.lang.String:A-

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ChoiceFormat setChoices() method in Java with Examples

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