Класс Java.io.Printstream в Java | Комплект 2
Java.io.Printstream Class in Java | Set 1
More Methods:
- PrintStream printf(Locale l, String format, Object… args) : A convenience method to write a formatted string to this output stream using the specified format string and arguments.
Syntax :public PrintStream printf(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. Returns: This output stream Throws: IllegalFormatException NullPointerException
//Java program to demonstrate printf method
import
java.io.*;
import
java.util.Locale;
class
PrintStreamDemo
{
public
static
void
main(String[] args)
{
String s =
"for"
;
// create printstream object
PrintStream printStream =
new
PrintStream(System.out);
// illustrating printf(Locale l, String format, Object... args) method
printStream.printf(Locale.US,
"Geeks%sGeeks"
, s);
}
}
Output: GeeksforGeeks
- PrintStream printf(String format, Object… args) : A convenience method to write a formatted string to this output stream using the specified format string and arguments.
Syntax :public PrintStream printf(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. Returns: This output stream Throws: IllegalFormatException NullPointerException
//Java program to demonstrate printf(String format, Object... args) method
import
java.io.*;
public
class
PrintStreamDemo
{
public
static
void
main(String[] args)
{
String s =
"for"
;
// create printstream object
PrintStream obj=
new
PrintStream(System.out);
// illustrating printf(String format, Object... args) method
obj.printf(
"Geeks%sGeeks"
, s);
}
}
Output: GeeksforGeeks
- void println(): Terminates the current line by writing the line separator string.
Syntax :public void println()
//Java program to demonstrate println() methods
import
java.io.PrintStream;
class
PrintStreamDemo
{
public
static
void
main(String[] args)
{
PrintStream obj =
new
PrintStream(System.out);
//illustrating println();
obj.println(
"GeeksforGeeks"
);
}
}
Output: GeeksforGeeks
- void println(boolean x): Prints a boolean and then terminate the line.
Syntax :public void println(boolean x)
//Java program to demonstrate println(boolean) method
import
java.io.*;
class
PrintStreamDemo
{
public
static
void
main(String[] args)
{
// create printstream object
PrintStream obj =
new
PrintStream(System.out);
//illustrating println(boolean) method
obj.println(
true
);
// flush the stream
obj.flush();
}
}
Output: true
- void println(char x): Prints a character and then terminate the line.
Syntax :public void println(char x)
//Java program to demonstrate println(char x) method
import
java.io.*;
public
class
PrintStreamDemo
{
public
static
void
main(String[] args)
{
char
c =
"g"
;
// create printstream object
PrintStream obj =
new
PrintStream(System.out);
// illustrating println(char x)
obj.println(c);
// flush the stream
obj.flush();
}
}
Output: g
- void println(char[] x): Prints an array of characters and then terminate the line.
Syntax :public void println(char[] x)
//Java program to demonstrate println(char[] x) method
import
java.io.*;
public
class
PrintStreamDemo
{
public
static
void
main(String[] args)
{
char
[] c = {
"G"
,
"E"
,
"E"
,
"K"
};
// create printstream object
PrintStream obj =
new
PrintStream(System.out);
// illustrating println(char[] x)
obj.println(c);
// flush the stream
obj.flush();
}
}
Output: GEEK
- void println(double x): Prints a double and then terminate the line.
Syntax :public void println(double x)
//Java program to demonstrate println(double x) method
import
java.io.*;
public
class
PrintStreamDemo
{
public
static
void
main(String[] args)
{
double
c =
5.42762
;
// create printstream object
PrintStream obj =
new
PrintStream(System.out);
// illustrating println(double x)
obj.println(c);
// flush the stream
obj.flush();
}
}
Output:
5.42762
- void println(float x): Prints a float and then terminate the line.
Syntax :public void println(float x)
//Java program to demonstrate println(float x) method
import
java.io.*;
public
class
PrintStreamDemo
{
public
static
void
main(String[] args)
{
float
c =
5
.168502f;
// create printstream object
PrintStream obj =
new
PrintStream(System.out);
// illustrating println(float x)
obj.println(c);
// flush the stream
obj.flush();
}
}
Output:
5.168502f
- void println(int x): Prints an integer and then terminate the line.
Syntax :public void println(boolean x)
//Java program to demonstrate println(int x) method
import
java.io.*;
public
class
PrintStreamDemo
{
public
static
void
main(String[] args)
{
int
c =
5
;
// create printstream object
PrintStream obj =
new
PrintStream(System.out);
// illustrating println(int x)
obj.println(c);
// flush the stream
obj.flush();
}
}
Output:
5
- void println(long x): Prints a long and then terminate the line.
Syntax :public void println(long x)
//Java program to demonstrate println(long x) method
import
java.io.*;
public
class
PrintStreamDemo
{
public
static
void
main(String[] args)
{
long
c = 123456789l;
try
{
// create printstream object
PrintStream obj=
new
PrintStream(System.out);
// illustrating println(long x)
obj.println(c);
// flush the stream
obj.flush();
}
catch
(Exception ex)
{
ex.printStackTrace();
}
}
}
Output:
123456789
- void println(Object x) :Prints an Object and then terminate the line.
Syntax :public void println(Object x)
//Java program to demonstrate println(Object x) method
import
java.io.*;
public
class
PrintStreamDemo
{
public
static
void
main(String[] args)
{
// create printstream object
PrintStream obj =
new
PrintStream(System.out);
//illustrating println(Object X)
obj.println(obj);
// flush the stream
obj.flush();
}
}
Output:
java.io.PrintStream@15db9742
- void println(String x) :Prints a String and then terminate the line.
Syntax :public void println(boolean x)
import
java.io.*;
import
java.io.*;
//Java program to demonstrate println(String x) method
public
class
PrintStreamDemo
{
public
static
void
main(String[] args)
{
String c =
"GeeksforGeeks"
;
// create printstream object
PrintStream ps =
new
PrintStream(System.out);
// illustrating println(String x)
ps.println(c);
// flush the stream
ps.flush();
}
}
Output:
GeeksforGeeks
- protected void setError() :Sets the error state of the stream to true.
Syntax :public void println(String x)
//Java program to demonstrate setError() method
import
java.io.*;
public
class
PrintStreamDemo
extends
PrintStream
{
public
PrintStreamDemo(OutputStream out)
{
super
(out);
}
public
static
void
main(String[] args)
{
byte
c[] = {
65
,
66
,
67
,
68
,
69
,
70
,
71
};
// create printstream object
PrintStreamDemo obj =
new
PrintStreamDemo(System.out);
// illustrating write() method
obj.write(c,
1
,
3
);
// flush the stream
obj.flush();
//illustrating setError() method
obj.setError();
}
}
Output:
BCD
- void write(byte[] buf, int off, int len) :Writes len bytes from the specified byte array starting at offset off to this stream.
Syntax :public void write(byte[] buf, int off, int len) Overrides: write in class FilterOutputStream Parameters: buf - A byte array off - Offset from which to start taking bytes len - Number of bytes to write
//Java program to demonstrate write(int b) method
import
java.io.*;
public
class
PrintStreamDemo
{
public
static
void
main(String[] args)
{
byte
c =
65
;
// create printstream object
PrintStream obj =
new
PrintStream(System.out);
//illustrating write(int b)
obj.write(c);
// flush the stream
obj.flush();
}
}
Output:
BCD
- void write(int b) :Writes the specified byte to this stream.
Syntax :public void write(int b) Overrides: write in class FilterOutputStream Parameters: b - The byte to be written
//Java program to demonstrate write(int b) method
import
java.io.*;
public
class
PrintStreamDemo
{
public
static
void
main(String[] args)
{
byte
c =
65
;
// create printstream object
PrintStream obj =
new
PrintStream(System.out);
//illustrating write(int b)
obj.write(c);
// flush the stream
obj.flush();
}
}
Output:
A
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