The flush() method is a built-in method of the java.util.Formatter which flushes the formatter. Writing any buffered output in its destination to the underlying operating system is referred to as Flushing.
Syntax:
public void flush()
Parameters: The function accepts no parameter.
Return Value: The function returns nothing, it just flushes the formatter. Hence the return type is void.
Errors and Exceptions: The function throws a FormatterClosedException when this function is used after closing the formatter.
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) { try { // 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); // closes the formatter frmt.close(); // close the frmt frmt.flush(); System.out.println("Flushed"); } catch (Exception e) { System.out.println("\nException is: " + e); } }} |
Output:
What is your name? My name is Gopal Dave ! Exception is: java.util.FormatterClosedException
Reference: https://docs.oracle.com/javase/10/docs/api/java/util/Formatter.html#close()