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Java PrintWriter class
Java PrintWriter class is the implementation of Writer class. It is used to print the formatted representation of objects to the text-output stream.
Class declaration
Let’s see the declaration for Java.io.PrintWriter class:
Methods of PrintWriter class
| Method | Description |
|---|---|
| void println(boolean x) | It is used to print the boolean value. |
| void println(char[] x) | It is used to print an array of characters. |
| void println(int x) | It is used to print an integer. |
| PrintWriter append(char c) | It is used to append the specified character to the writer. |
| PrintWriter append(CharSequence ch) | It is used to append the specified character sequence to the writer. |
| PrintWriter append(CharSequence ch, int start, int end) | It is used to append a subsequence of specified character to the writer. |
| boolean checkError() | It is used to flushes the stream and check its error state. |
| protected void setError() | It is used to indicate that an error occurs. |
| protected void clearError() | It is used to clear the error state of a stream. |
| PrintWriter format(String format, Object… args) | It is used to write a formatted string to the writer using specified arguments and format string. |
| void print(Object obj) | It is used to print an object. |
| void flush() | It is used to flushes the stream. |
| void close() | It is used to close the stream. |
Java PrintWriter Example
Let’s see the simple example of writing the data on a console and in a text file testout.txt using Java PrintWriter class.
Outpt
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The content of a text file testout.txt is set with the data Like Java, Spring, Hibernate, Android, PHP etc.
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