The setError() method of PrintWriter Class in Java is used to set the error state of this PrintWriter instance. This method is used as an indicator to indicate that an error has occurred in the stream. It is protected and hence needs to be implemented by deriving the PrintWriter class to use it.
Syntax:
protected void setError()
Parameters: This method do not accepts any parameter.
Return Value: This method do not return anything.
Below methods illustrates the working of setError() method:
Program 1:
// Java program to demonstrate// PrintWriter setError() method import java.io.*; // extending the PrintWriter Classclass GFG extends PrintWriter { // Defining the protected constructor public GFG(OutputStream out) { super(System.out); } // Driver Code public static void main(String[] args) { // The string to be written in the Writer String str = "GeeksForGeeks"; try { // Create a GFG instance GFG writer = new GFG(System.out); // Write the above string to this writer // This will put the string in the stream // till it is printed on the console writer.write(str); writer.flush(); // Use the protected setError() method writer.setError(); } catch (Exception e) { System.out.println(e); } }} |
Output:
GeeksForGeeks
Program 2:
// Java program to demonstrate// PrintWriter setError() method import java.io.*; // extending the PrintWriter Classclass GFG extends PrintWriter { // Defining the protected constructor public GFG(OutputStream out) { super(System.out); } // Driver Code public static void main(String[] args) { try { // Create a GFG instance GFG writer = new GFG(System.out); // Write the char to this writer // This will put the char in the stream // till it is printed on the console writer.write(65); writer.flush(); // Use the protected setError() method writer.setError(); } catch (Exception e) { System.out.println(e); } }} |
Output:
A
