Java.util.Formatter.ioException() Method

Description

The java.util.Formatter.ioException() method returns the IOException last thrown by this formatter's Appendable.

If the destination's append() method never throws IOException, then this method will always return null.

Declaration

Following is the declaration for java.util.Formatter.ioException() method

public IOException ioException()

Parameters

NA

Return Value

This method returns the last exception thrown by the Appendable or null if no such exception exists.

Exception

NA

Example

The following example shows the usage of java.util.Formatter.ioException() method.

package com.tutorialspoint;

import java.util.Formatter;
import java.util.Locale;

public class FormatterDemo {
   public static void main(String[] args) {

      // create a new formatter
      StringBuffer buffer = new StringBuffer();
      Formatter formatter = new Formatter(buffer, Locale.US);

      // format a new string
      String name = "World";
      formatter.format("Hello %s !", name);

      // print the formatted string with default locale
      System.out.println("" + formatter);

      // print latest exception, which is null
      System.out.println("" + formatter.ioException());
   }
}

Let us compile and run the above program, this will produce the following result −

Hello World !
null

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