Java.io.Printstream Class in Java | Set 1

public class PrintStream
  extends FilterOutputStream
    implements Appendable, Closeable

 protected OutputStream out:This is the output stream to be filtered. 

• PrintStream(File file): Creates a new print stream, without automatic line flushing, with the specified file.
• PrintStream(File file, String csn) : Creates a new print stream, without automatic line flushing, with the specified file and charset.
• PrintStream(OutputStream out) : Creates a new print stream.
• PrintStream(OutputStream out, boolean autoFlush) : Creates a new print stream.
• PrintStream(OutputStream out, boolean autoFlush, String encoding) : Creates a new print stream.
• PrintStream(String fileName) : Creates a new print stream, without automatic line flushing, with the specified file name.
• PrintStream(String fileName, String csn) :Creates a new print stream, without automatic line flushing, with the specified file name and charset.

• PrintStream append(char c) : Appends the specified character to this output stream.

  Syntax :public PrintStream append(char c)
  Parameters:
  c - The 16-bit character to append
  Returns:
  This output stream

• PrintStream append(CharSequence csq, int start, int end): Appends the specified character sequence to this output stream.

  Syntax :public PrintStream append(CharSequence csq,
                   int start,
                   int end)
  Parameters:
  csq - The character sequence from which a subsequence will be appended. 
  start - The index of the first character in the subsequence
  end - The index of the character following the last character in the subsequence
  Returns:
  This output stream
  Throws:
  IndexOutOfBoundsException

• PrintStream append(CharSequence csq) : Appends a subsequence of the specified character sequence to this output stream.

  Syntax :public PrintStream append(CharSequence csq)
  Parameters:
  csq - The character sequence to append. 
  Returns:
  This output stream
  

• boolean checkError(): Flushes the stream and checks its error state.

  Syntax :public boolean checkError()
  Returns:
  true if and only if this stream has encountered an IOException 
  other than InterruptedIOException, or the setError method has been invoked

• protected void clearError() : Clears the internal error state of this stream.

  Syntax :protected void clearError()
  

• void close() : Closes the stream.

  Syntax :public void close()
  Overrides:
  close in class FilterOutputStream

• void flush(): Flushes the stream.

  Syntax :public void flush()
  Overrides:
  flush in class FilterOutputStream

• PrintStream format(Locale l, String format, Object... args): Writes a formatted string to this output stream using the specified format string and arguments.

  Syntax :public PrintStream format(Locale l,
                   String format,
                   Object... args)
  Parameters:
  l - The locale to apply during formatting. 
  If l is null then no localization is applied.
  format - A format string as described in Format string syntax
  args - Arguments referenced by the format specifiers in the format string. 
  The number of arguments is variable and may be zero.
  Returns:
  This output stream
  Throws:
  IllegalFormatException 
  NullPointerException

• PrintStream format(String format, Object... args): Writes a formatted string to this output stream using the specified format string and arguments.

  Syntax :public PrintStream format(String format,
                   Object... args)
  Parameters:
  format - A format string as described in Format string syntax
  args - Arguments referenced by the format specifiers in the format string. 
  The number of arguments is variable and may be zero.
  Returns:
  This output stream
  Throws:
  IllegalFormatException 
  NullPointerException 

• void print(boolean b): Prints a boolean value.

  Syntax :public void print(boolean b)

• void print(char c): Prints a character.

  Syntax :public void print(char c)

• void print(char[] s): Prints an array of characters.

  Syntax :public void print(char[] s)
  

• void print(double d) :Prints a double-precision floating-point number.

  Syntax :public void print(double b)
  

• void print(float f): Prints a floating-point number.

  Syntax :public void print(float f)

• void print(int i): Prints an integer.

  Syntax :public void print(int i)

• void print(long l): Prints a long integer.

  Syntax :public void print(long l)

• void print(Object obj) :Prints an object.

  Syntax :public void print(Object obj)

• void print(String s): Prints a string.

  Syntax :public void print(String s)

import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.PrintStream;
import java.util.Locale;
//Java program to demonstrate PrintStream methods
class Printstream
{
    public static void main(String args[]) throws FileNotFoundException
    {
        FileOutputStream fout=new FileOutputStream("file.txt");
        
        //creating Printstream obj
        PrintStream out=new PrintStream(fout);
        String s="First";

        //writing to file.txt
        char c[]={'G','E','E','K'};
        
        //illustrating print(boolean b) method
        out.print(true);
        
        //illustrating print(int i) method
        out.print(1);
        
        //illustrating print(float f) method
        out.print(4.533f);
        
        //illustrating print(String s) method
        out.print("GeeksforGeeks");
        out.println();
        
        //illustrating print(Object Obj) method
        out.print(fout);
        out.println();
        
        //illustrating append(CharSequence csq) method
        out.append("Geek");
        out.println();
        
        //illustrating checkError() method
        out.println(out.checkError());
        
        //illustrating format() method
        out.format(Locale.UK, "Welcome to my %s program", s);
        
        //illustrating flush method
        out.flush();
        
        //illustrating close method
        out.close();
    }
}

true14.533GeeksforGeeks
java.io.FileOutputStream@1540e19dGeek
false
Welcome to my First program