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Java Source Code / Java Documentation » 6.0 JDK Modules » j2me » java.io

Source Cross Reference Class Diagram Java Document (Java Doc)

java.lang .Object

java.io .OutputStream

java.io .PrintStream

All known Subclasses:   util .BufferedPrintStream,
PrintStream
public class PrintStream extends OutputStream (Code)
A PrintStream adds functionality to another output stream, namely the ability to print representations of various data values conveniently. Two other features are provided as well. Unlike other output streams, a PrintStream never throws an IOException; instead, exceptional situations merely set an internal flag that can be tested via the checkError method.
All characters printed by a PrintStream are converted into bytes using the platform's default character encoding.
version:
   12/17/01 (CLDC 1.1)
since:
   JDK1.0, CLDC 1.0

Constructor Summary
public PrintStream(OutputStream out)
     Create a new print stream.

Method Summary
public boolean checkError()
     Flush the stream and check its error state.
public void close()
     Close the stream.
public void flush()
     Flush the stream.
public void print(boolean b)
     Print a boolean value.
public void print(char c)
     Print a character.
public void print(int i)
     Print an integer.
public void print(long l)
     Print a long integer.
public void print(float f)
     Print a floating point number.
public void print(double d)
     Print a double-precision floating point number.
public void print(char s)
     Print an array of characters.
public void print(String s)
     Print a string.
public void print(Object obj)
     Print an object.
public void println()
     Terminate the current line by writing the line separator string.
public void println(boolean x)
     Print a boolean and then terminate the line.
public void println(char x)
     Print a character and then terminate the line.
public void println(int x)
     Print an integer and then terminate the line.
public void println(long x)
     Print a long and then terminate the line.
public void println(float x)
     Print a float and then terminate the line.
public void println(double x)
     Print a double and then terminate the line.
public void println(char x)
     Print an array of characters and then terminate the line.
public void println(String x)
     Print a String and then terminate the line.
public void println(Object x)
     Print an Object and then terminate the line.
protected void setError()
     Set the error state of the stream to true.
public void write(int b)
     Write the specified byte to this stream.
public void write(byte buf, int off, int len)
     Write len bytes from the specified byte array starting at offset off to this stream.

Constructor Detail
PrintStream
public PrintStream(OutputStream out)(Code)
Create a new print stream. This stream will not flush automatically.
Parameters:
  out - The output stream to which values and objects will beprinted

Method Detail
checkError
public boolean checkError()(Code)
Flush the stream and check its error state. The internal error state is set to true when the underlying output stream throws an IOException, and when the setError method is invoked. True if and only if this stream has encountered anIOException, or thesetError method has been invoked

close
public void close()(Code)
Close the stream. This is done by flushing the stream and then closing the underlying output stream.
See Also:   java.io.OutputStream.close

flush
public void flush()(Code)
Flush the stream. This is done by writing any buffered output bytes to the underlying output stream and then flushing that stream.
See Also:   java.io.OutputStream.flush

print
public void print(boolean b)(Code)
Print a boolean value. The string produced by java.lang.String.valueOf(boolean) is translated into bytes according to the platform's default character encoding, and these bytes are written in exactly the manner of the PrintStream.write(int) method.
Parameters:
  b - The boolean to be printed

print
public void print(char c)(Code)
Print a character. The character is translated into one or more bytes according to the platform's default character encoding, and these bytes are written in exactly the manner of the PrintStream.write(int) method.
Parameters:
  c - The char to be printed

print
public void print(int i)(Code)
Print an integer. The string produced by java.lang.String.valueOf(int) is translated into bytes according to the platform's default character encoding, and these bytes are written in exactly the manner of the PrintStream.write(int) method.
Parameters:
  i - The int to be printed
See Also:   java.lang.Integer.toString(int)

print
public void print(long l)(Code)
Print a long integer. The string produced by java.lang.String.valueOf(long) is translated into bytes according to the platform's default character encoding, and these bytes are written in exactly the manner of the PrintStream.write(int) method.
Parameters:
  l - The long to be printed
See Also:   java.lang.Long.toString(long)

print
public void print(float f)(Code)
Print a floating point number. The string produced by java.lang.String.valueOf(float) is translated into bytes according to the platform's default character encoding, and these bytes are written in exactly the manner of the PrintStream.write(int) method.
Parameters:
  f - The float to be printed
See Also:   java.lang.Float.toString(float)
since:
   CLDC 1.1

print
public void print(double d)(Code)
Print a double-precision floating point number. The string produced by java.lang.String.valueOf(double) is translated into bytes according to the platform's default character encoding, and these bytes are written in exactly the manner of the PrintStream.write(int) method.
Parameters:
  d - The double to be printed
See Also:   java.lang.Double.toString(double)
since:
   CLDC 1.1

print
public void print(char s)(Code)
Print an array of characters. The characters are converted into bytes according to the platform's default character encoding, and these bytes are written in exactly the manner of the PrintStream.write(int) method.
Parameters:
  s - The array of chars to be printed
throws:
  NullPointerException - If s is null

print
public void print(String s)(Code)
Print a string. If the argument is null then the string "null" is printed. Otherwise, the string's characters are converted into bytes according to the platform's default character encoding, and these bytes are written in exactly the manner of the PrintStream.write(int) method.
Parameters:
  s - The String to be printed

print
public void print(Object obj)(Code)
Print an object. The string produced by the java.lang.String.valueOf(Object) method is translated into bytes according to the platform's default character encoding, and these bytes are written in exactly the manner of the PrintStream.write(int) method.
Parameters:
  obj - The Object to be printed
See Also:   java.lang.Object.toString

println
public void println()(Code)
Terminate the current line by writing the line separator string. The line separator string is defined by the system property line.separator, and is not necessarily a single newline character ('\n').

println
public void println(boolean x)(Code)
Print a boolean and then terminate the line. This method behaves as though it invokes PrintStream.print(boolean) and then PrintStream.println().
Parameters:
  x - The boolean to be printed

println
public void println(char x)(Code)
Print a character and then terminate the line. This method behaves as though it invokes PrintStream.print(char) and then PrintStream.println().
Parameters:
  x - The char to be printed.

println
public void println(int x)(Code)
Print an integer and then terminate the line. This method behaves as though it invokes PrintStream.print(int) and then PrintStream.println().
Parameters:
  x - The int to be printed.

println
public void println(long x)(Code)
Print a long and then terminate the line. This method behaves as though it invokes PrintStream.print(long) and then PrintStream.println().
Parameters:
  x - The long to be printed.

println
public void println(float x)(Code)
Print a float and then terminate the line. This method behaves as though it invokes PrintStream.print(float) and then PrintStream.println().
Parameters:
  x - The float to be printed.
since:
   CLDC 1.1

println
public void println(double x)(Code)
Print a double and then terminate the line. This method behaves as though it invokes PrintStream.print(double) and then PrintStream.println().
Parameters:
  x - The double to be printed.
since:
   CLDC 1.1

println
public void println(char x)(Code)
Print an array of characters and then terminate the line. This method behaves as though it invokes PrintStream.print(char[]) and then PrintStream.println().
Parameters:
  x - an array of chars to print.

println
public void println(String x)(Code)
Print a String and then terminate the line. This method behaves as though it invokes PrintStream.print(String) and then PrintStream.println().
Parameters:
  x - The String to be printed.

println
public void println(Object x)(Code)
Print an Object and then terminate the line. This method behaves as though it invokes PrintStream.print(Object) and then PrintStream.println().
Parameters:
  x - The Object to be printed.

setError
protected void setError()(Code)
Set the error state of the stream to true.
since:
   JDK1.1

write
public void write(int b)(Code)
Write the specified byte to this stream.
Note that the byte is written as given; to write a character that will be translated according to the platform's default character encoding, use the print(char) or println(char) methods.
Parameters:
  b - The byte to be written
See Also:   PrintStream.print(char)
See Also:   PrintStream.println(char)

write
public void write(byte buf, int off, int len)(Code)
Write len bytes from the specified byte array starting at offset off to this stream.
Note that the bytes will be written as given; to write characters that will be translated according to the platform's default character encoding, use the print(char) or println(char) methods.
Parameters:
  buf - A byte array
Parameters:
  off - Offset from which to start taking bytes
Parameters:
  len - Number of bytes to write

Methods inherited from java.io.OutputStream
public void close() throws IOException(Code)(Java Doc)
public void flush() throws IOException(Code)(Java Doc)
abstract public void write(int b) throws IOException(Code)(Java Doc)
public void write(byte b) throws IOException(Code)(Java Doc)
public void write(byte b, int off, int len) throws IOException(Code)(Java Doc)

Methods inherited from java.lang.Object
public boolean equals(Object obj)(Code)(Java Doc)
final native public Class getClass()(Code)(Java Doc)
native public int hashCode()(Code)(Java Doc)
final native public void notify()(Code)(Java Doc)
final native public void notifyAll()(Code)(Java Doc)
public String toString()(Code)(Java Doc)
final native public void wait(long timeout) throws InterruptedException(Code)(Java Doc)
final public void wait(long timeout, int nanos) throws InterruptedException(Code)(Java Doc)
final public void wait() throws InterruptedException(Code)(Java Doc)

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