Package java.io

Class PrintStream

java.lang.Object

java.io.OutputStream

java.io.PrintStream

All Implemented Interfaces:

Closeable, Flushable, AutoCloseable, Modified

public class PrintStream
extends OutputStream
implements Modified

Wraps an existing OutputStream and provides convenience methods for writing common data types in a human readable format. No IOException is thrown by this class. Instead, the stack trace is written to the err- stream. This class puts special focus on efficiency. No strings are allocated during write operations!

Constructor Summary

Constructors

Constructor	Description
PrintStream(OutputStream out)

Method Summary

Modifier and Type	Method	Description
void	print(boolean b)	Prints a boolean as a string to the output stream.
void	print(char c)	Prints a single ascii char (8bit) to the output stream.
void	print(char[] chars)	Prints chars.length ascii chars (8bit each char) to the output stream.
int	print(char[] b, int off, int count)	Prints len ascii chars (8bit each char) starting at offset to this output stream.
void	print(double val)	Prints a double as a string to the output stream.
void	print(float val)	Prints a float as a string to the output stream.
void	print(int val)	Prints a integer as a string to the output stream.
void	print(long val)	Prints a long as a string to the output stream.
int	print(String str)	Prints a string to the output stream.
void	printHex(int val)	Prints a integer in hexadezimal notation as a string to the output stream.
void	printHex(long val)	Prints a long in hexadezimal notation as a string to the output stream.
void	printHexln(int val)	Prints a integer in hexadezimal notation as a string to the output stream and then terminates the line.
void	printHexln(long val)	Prints a long in hexadezimal notation as a string to the output stream and then terminates the line.
void	println()	Terminates the line.
void	println(boolean b)	Prints a boolean as a string to the output stream and then terminates the line.
void	println(char c)	Prints a single ascii char (8bit) to the output stream and then terminates the line.
void	println(char[] chars)	Prints chars.length ascii chars (8bit each char) to the output stream and then terminates the line.
void	println(double val)	Prints a double as a string to the output stream and then terminates the line.
void	println(float val)	Prints a float as a string to the output stream and then terminates the line.
void	println(int val)	Prints a integer as a string to the output stream and then terminates the line.
void	println(long val)	Prints a long as a string to the output stream and then terminates the line.
int	println(String str)	Prints a string to the output stream and then terminates the line.
void	write(int b)	Writes one byte to the target stream.

Methods inherited from class java.io.OutputStream

checkError, close, flush, write, write

Methods inherited from class java.lang.Object

equals, getClass, hashCode, toString

Constructor Detail

PrintStream

public PrintStream(OutputStream out)

Method Detail

write

public void write(int b)

Writes one byte to the target stream. Only the least significant byte of the integer oneByte is written.

Specified by:

write in class OutputStream

Parameters:

b - the byte to be written

println

public void println()

Terminates the line.

print

public void print(char c)

Prints a single ascii char (8bit) to the output stream.

Parameters:

c - the char to write.

println

public void println(char c)

Prints a single ascii char (8bit) to the output stream and then terminates the line.

Parameters:

c - the char to write.

print

public void print(char[] chars)

Prints chars.length ascii chars (8bit each char) to the output stream.

Parameters:

chars - the chars to write

println

public void println(char[] chars)

Prints chars.length ascii chars (8bit each char) to the output stream and then terminates the line.

Parameters:

chars - the chars to write

print

public int print(char[] b,
                 int off,
                 int count)

Prints len ascii chars (8bit each char) starting at offset to this output stream.

Parameters:

b - the char array

off - the start offset in the data.

count - the number of char to write

Returns:

the number of written bytes.

print

public int print(String str)

Prints a string to the output stream.

Parameters:

str - The string to write.

Returns:

The number of written chars.

println

public int println(String str)

Prints a string to the output stream and then terminates the line.

Parameters:

str - The string to write.

Returns:

The number of written chars.

print

public void print(boolean b)

Prints a boolean as a string to the output stream.

Parameters:

b - the boolean to write.

println

public void println(boolean b)

Prints a boolean as a string to the output stream and then terminates the line.

Parameters:

b - the boolean to write.

print

public void print(int val)

Prints a integer as a string to the output stream.

Parameters:

val - the integer to write.

println

public void println(int val)

Prints a integer as a string to the output stream and then terminates the line.

Parameters:

val - the integer to write.

print

public void print(long val)

Prints a long as a string to the output stream.

Parameters:

val - the long to write.

println

public void println(long val)

Prints a long as a string to the output stream and then terminates the line.

Parameters:

val - the long to write.

print

public void print(float val)

Prints a float as a string to the output stream.

Parameters:

val - the float to write.

println

public void println(float val)

Prints a float as a string to the output stream and then terminates the line.

Parameters:

val - the float to write.

print

public void print(double val)

Prints a double as a string to the output stream.

Parameters:

val - the double to write.

println

public void println(double val)

Prints a double as a string to the output stream and then terminates the line.

Parameters:

val - the double to write.

printHex

public void printHex(int val)

Prints a integer in hexadezimal notation as a string to the output stream.

Parameters:

val - the integer to write.

printHexln

public void printHexln(int val)

Prints a integer in hexadezimal notation as a string to the output stream and then terminates the line.

Parameters:

val - the integer to write.

printHex

public void printHex(long val)

Prints a long in hexadezimal notation as a string to the output stream.

Parameters:

val - the long to write.

printHexln

public void printHexln(long val)

Prints a long in hexadezimal notation as a string to the output stream and then terminates the line.

Parameters:

val - the long to write.