The ioException() method is a built-in method of the java.util.Formatter which 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.
Syntax:
public IOException ioException()
Parameters: The function accepts no parameter.
Return Value: The function returns the IOException which was last thrown by the Formatter’s appendable.
Below is the implementation of the above function:
Program 1:
// Java program to implement // the above function import java.util.Formatter;
import java.util.Locale;
public class Main {
public static void main(String[] args)
{
// Get the string Buffer
StringBuffer buffer
= new StringBuffer();
// Object creation
Formatter frmt
= new Formatter(buffer,
Locale.CANADA);
// Format a new string
String name = "My name is Gopal Dave" ;
frmt.format( "What is your name? \n%s !" ,
name);
// Print the Formatted string
System.out.println(frmt);
// flushes the formatter
frmt.flush();
System.out.println( "Flushed" );
}
} |
Output:
What is your name? My name is Gopal Dave ! Flushed
Program 2:
// Java program to implement // the above function import java.util.Formatter;
import java.util.Locale;
public class Main {
public static void main(String[] args)
{
// Get the string Buffer
StringBuffer buffer
= new StringBuffer();
// Object creation
Formatter frmt
= new Formatter(buffer,
Locale.CANADA);
// Format a new string
String name = "My name is Gopal Dave" ;
frmt.format( "What is your name? \n%s !" ,
name);
System.out.println( "The last exception thrown: "
+ frmt.ioException());
// Closes the format
frmt.close();
}
} |
Output:
The last exception thrown: null
Output:
The last exception thrown: null
Reference: https://docs.oracle.com/javase/10/docs/api/java/util/Formatter.html#flush()