Introduction
The Java.io.PrintWriter class prints formatted representations of objects to a text-output stream.
Class declaration
Following is the declaration for Java.io.PrintWriter class −
public class PrintWriter
extends Writer
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Field
Following are the fields for Java.io.PrintWriter class −
- protected Writer out − This is the character-output stream of this PrintWriter.
- protected Object lock − This is the object used to synchronize operations on this stream.
Class constructors
Sr.No. | Constructor & Description |
---|---|
1 | PrintWriter(File file)This creates a new PrintWriter, without automatic line flushing, with the specified file. |
2 | PrintWriter(File file, String csn)This creates a new PrintWriter, without automatic line flushing, with the specified file and charset. |
3 | PrintWriter(OutputStream out)This creates a new PrintWriter, without automatic line flushing, from an existing OutputStream. |
4 | PrintWriter(OutputStream out, boolean autoFlush)This creates a new PrintWriter from an existing OutputStream. |
5 | PrintWriter(String fileName)This creates a new PrintWriter, without automatic line flushing, with the specified file name. |
6 | PrintWriter(String fileName, String csn)This creates a new PrintWriter, without automatic line flushing, with the specified file name and charset. |
7 | PrintWriter(Writer out)This creates a new PrintWriter, without automatic line flushing. |
8 | PrintWriter(Writer out, boolean autoFlush)This creates a new PrintWriter. |
Class methods
Sr.No. | Method & Description |
---|---|
1 | PrintWriter append(char c)This method appends the specified character to this writer. |
2 | PrintWriter append(CharSequence csq)This method appends the specified character sequence to this writer. |
3 | PrintWriter append(CharSequence csq, int start, int end)This method appends a subsequence of the specified character sequence to this writer. |
4 | boolean checkError()This method flushes the stream if it’s not closed and checks its error state. |
5 | protected void clearError()This method Clears the error state of this stream. |
6 | void close()This method Closes the stream and releases any system resources associated with it. |
7 | void flush()This method Flushes the stream. |
8 | PrintWriter format(Locale l, String format, Object… args)This method writes a formatted string to this writer using the specified format string and arguments. |
9 | PrintWriter format(String format, Object… args)This method writes a formatted string to this writer using the specified format string and arguments. |
10 | void print(boolean b)This method prints a boolean value. |
11 | void print(char c)This method prints a character. |
12 | void print(char[] s)This method Prints an array of characters. |
13 | void print(double d)This method Prints a double-precision floating-point number. |
14 | void print(float f)This method prints a floating-point number. |
15 | void print(int i)This method prints an integer. |
16 | void print(long l)This method prints a long integer. |
17 | void print(Object obj)This method prints an object. |
18 | void print(String s)This method prints a string. |
19 | PrintWriter printf(Locale l, String format, Object… args)This is a convenience method to write a formatted string to this writer using the specified format string and arguments. |
20 | PrintWriter printf(String format, Object… args)This is a convenience method to write a formatted string to this writer using the specified format string and arguments. |
21 | void println()This method terminates the current line by writing the line separator string. |
22 | void println(boolean x)This method prints a boolean value and then terminates the line. |
23 | void println(char x)This method prints a character and then terminates the line. |
24 | void println(char[] x)This method prints an array of characters and then terminates the line. |
25 | void println(double x)This method prints a double-precision floating-point number and then terminates the line. |
26 | void println(float x)This method prints a floating-point number and then terminates the line. |
27 | void println(int x)This method prints an integer and then terminates the line. |
28 | void println(long x)This method prints a long integer and then terminates the line. |
29 | void println(Object x)This method prints an Object and then terminates the line. |
30 | void println(String x)This method prints a String and then terminates the line. |
31 | protected void setError()This method indicates that an error has occurred. |
32 | void write(char[] buf)This method writes an array of characters. |
33 | void write(char[] buf, int off, int len)This method writes a portion of an array of characters. |
34 | void write(int c)This methodWrites a single character. |
35 | void write(String s)This method writes a string. |
36 | void write(String s, int off, int len)This method writes a portion of a string. |
Methods inherited
This class inherits methods from the following classes −
- Java.io.Object
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