Java.io.Printstream Class in Java | Set 2 Last Updated : 12 Sep, 2023 Improve Improve Like Article Like Save Share Report 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 Like Article Suggest improvement Previous Java.io.CharArrayWriter class in Java | Set 2 Next Generating Password and OTP in Java Share your thoughts in the comments Add Your Comment Please Login to comment...