The toPattern() method of the DecimalFormat class in Java is used to convert the format of the current pattern of this DecimalFormat to a string format. This converted string represents the pattern which is used to format the current state of this DecimalFormat instance.
Syntax:
public String toPattern()
Parameters: This method does not accepts any parameter.
Return Value: This method returns a string which represents the pattern which is used to format the current state of this DecimalFormat instance.
Below programs illustrate the above method:
Program 1:
// Java program to illustrate the// toPattern() method  import java.text.DecimalFormat;  public class GFG {      public static void main(String[] args)    {          // Create a DecimalFormat instance        DecimalFormat deciFormat = new DecimalFormat();          // Convert the current formatting state        // to a string object        String pattern = deciFormat.toPattern();          System.out.println(pattern);    }} |
Output:
#, ##0.###
Program 2:
// Java program to illustrate the// toPattern() method  import java.text.DecimalFormat;  public class GFG {      public static void main(String[] args)    {          // Create a DecimalFormat instance        DecimalFormat deciFormat = new DecimalFormat();          // Apply a new pattern        deciFormat.applyPattern("##, ##.##");          // Convert the current formatting state        // to a string object        String pattern = deciFormat.toPattern();          System.out.println(pattern);    }} |
Output:
#, #0.## ;#, #0.##
Reference: https://docs.oracle.com/javase/7/docs/api/java/text/DecimalFormat.html#toPattern()
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