Class java.io.PrintWriter





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Class java.io.PrintWriter


java.lang.Object
|
+----java.io.Writer
|
+----java.io.PrintWriter



public class PrintWriter
extends Writer

Print formatted representations of objects to a text-output stream. This
class implements all of the print methods found in PrintStream. It does not
contain methods for writing raw bytes, for which a program should use
unencoded byte streams.
Unlike the PrintStream class, if automatic flushing is enabled it will
be done only when one of the println() methods is invoked, rather than
whenever a newline character happens to be output. The println() methods
use the platform's own notion of line separator rather than the newline
character.
Methods in this class never throw I/O exceptions. The client may
inquire as to whether any errors have occurred by invoking checkError().








PrintWriter(OutputStream)
Create a new PrintWriter, without automatic line flushing, from an
existing OutputStream.

PrintWriter(OutputStream, boolean)
Create a new PrintWriter from an existing OutputStream.

PrintWriter(Writer)
Create a new PrintWriter, without automatic line flushing.

PrintWriter(Writer, boolean)
Create a new PrintWriter.






checkError()
Flush the stream and check its error state.

close()
Close the stream.

flush()
Flush the stream.

print(boolean)
Print a boolean.

print(char)
Print a character.

print(char[])
Print an array of chracters.

print(double)
Print a double.

print(float)
Print a float.

print(int)
Print an integer.

print(long)
Print a long.

print(Object)
Print an object.

print(String)
Print a String.

println()
Finish the line.

println(boolean)
Print a boolean, and then finish the line.

println(char)
Print a character, and then finish the line.

println(char[])
Print an array of characters, and then finish the line.

println(double)
Print a double, and then finish the line.

println(float)
Print a float, and then finish the line.

println(int)
Print an integer, and then finish the line.

println(long)
Print a long, and then finish the line.

println(Object)
Print an Object, and then finish the line.

println(String)
Print a String, and then finish the line.

setError()
Indicate that an error has occurred.

write(char[])
Write an array of characters.

write(char[], int, int)
Write a portion of an array of characters.

write(int)
Write a single character.

write(String)
Write a string.

write(String, int, int)
Write a portion of a string.







PrintWriter

public PrintWriter(Writer out)


Create a new PrintWriter, without automatic line flushing.


Parameters:
out - A character-output stream



PrintWriter

public PrintWriter(Writer out,
boolean autoFlush)


Create a new PrintWriter.


Parameters:
out - A character-output stream
autoFlush - A boolean; if true, the println() methods will flush
the output buffer



PrintWriter

public PrintWriter(OutputStream out)


Create a new PrintWriter, without automatic line flushing, from an
existing OutputStream. This convenience constructor creates the
necessary intermediate OutputStreamWriter, which will convert characters
into bytes using the default character encoding.


Parameters:
out - An output stream
See Also:
OutputStreamWriter



PrintWriter

public PrintWriter(OutputStream out,
boolean autoFlush)


Create a new PrintWriter from an existing OutputStream. This
convenience constructor creates the necessary intermediate
OutputStreamWriter, which will convert characters into bytes using the
default character encoding.


Parameters:
out - An output stream
autoFlush - A boolean; if true, the println() methods will flush
the output buffer
See Also:
OutputStreamWriter







flush

public void flush()


Flush the stream.


Overrides:
flush in class Writer



close

public void close()


Close the stream.


Overrides:
close in class Writer



checkError

public boolean checkError()


Flush the stream and check its error state. Errors are cumulative;
once the stream encounters an error, this routine will return true on
all successive calls.


Returns:
True if the print stream has encountered an error, either on the
underlying output stream or during a format conversion.



setError

protected void setError()


Indicate that an error has occurred.



write

public void write(int c)


Write a single character.


Overrides:
write in class Writer



write

public void write(char buf[],
int off,
int len)


Write a portion of an array of characters.


Overrides:
write in class Writer



write

public void write(char buf[])


Write an array of characters. This method cannot be inherited from the
Writer class because it must suppress I/O exceptions.


Overrides:
write in class Writer



write

public void write(String s,
int off,
int len)


Write a portion of a string.


Overrides:
write in class Writer



write

public void write(String s)


Write a string. This method cannot be inherited from the Writer class
because it must suppress I/O exceptions.


Overrides:
write in class Writer



print

public void print(boolean b)


Print a boolean.



print

public void print(char c)


Print a character.



print

public void print(int i)


Print an integer.



print

public void print(long l)


Print a long.



print

public void print(float f)


Print a float.



print

public void print(double d)


Print a double.



print

public void print(char s[])


Print an array of chracters.



print

public void print(String s)


Print a String.



print

public void print(Object obj)


Print an object.



println

public void println()


Finish the line.



println

public void println(boolean x)


Print a boolean, and then finish the line.



println

public void println(char x)


Print a character, and then finish the line.



println

public void println(int x)


Print an integer, and then finish the line.



println

public void println(long x)


Print a long, and then finish the line.



println

public void println(float x)


Print a float, and then finish the line.



println

public void println(double x)


Print a double, and then finish the line.



println

public void println(char x[])


Print an array of characters, and then finish the line.



println

public void println(String x)


Print a String, and then finish the line.



println

public void println(Object x)


Print an Object, and then finish the line.




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