Java.io.PrintWriter class in Java | Set 2 Last Updated : 12 Sep, 2023 Improve Improve Like Article Like Save Share Report Java.io.PrintWriter class in Java | Set 1 More methods: PrintWriter printf(Locale l, String format, Object… args) : A convenience method to write a formatted string to this writer using the specified format string and arguments. Syntax :public PrintWriter 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 writer Throws: IllegalFormatException NullPointerException import java.io.*; import java.util.Locale; //Java program to demonstrate printf method public class PrintWriterDemo { public static void main(String[] args) { String s = "for"; // create PrintWriter object PrintWriter pr= new PrintWriter(System.out); // printf this string pr.printf(Locale.CANADA, "Geeks%sGeeks", s); // flush the stream pr.flush(); } } Output: GeeksforGeeks PrintWriter printf(String format, Object… args) : A convenient method to write a formatted string to this writer using the specified format string and arguments. Syntax :public PrintWriter 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 writer Throws: IllegalFormatException NullPointerException import java.io.*; //Java program to demonstrate printf(String format, Object... args) method public class PrintWriterDemo { public static void main(String[] args) { String s = "for"; // create PrintWriter object PrintWriter pr= new PrintWriter(System.out); // printf this string pr.printf("Geeks%sGeeks", s); // flush the stream pr.flush(); } } Output: GeeksforGeeks void println(): Terminates the current line by writing the line separator string. Syntax :public void println() import java.io.*; //Java program to demonstrate println() method public class PrintWriterDemo { public static void main(String[] args) { String s = "GeeksforGeeks"; // create PrintWriter object PrintWriter pr= new PrintWriter(System.out); // printf this string pr.printf("%s", s); // flush the stream pr.flush(); } } Output: GeeksforGeeks void println(boolean x): Prints a boolean and then terminate the line. Syntax :public void println(boolean x) import java.io.*; //Java program to demonstrate println(boolean) method public class PrintWriterDemo { public static void main(String[] args) { // create PrintWriter object PrintWriter pr= new PrintWriter(System.out); // print a boolean and change line pr.println(true); pr.print("New Line"); // flush the stream pr.flush(); } } Output: true New Line void println(char x): Prints a character and then terminate the line. Syntax :public void println(char x) import java.io.*; //Java program to demonstrate println(char x) method public class PrintWriterDemo { public static void main(String[] args) { char c = 'a'; // create PrintWriter object PrintWriter pr= new PrintWriter(System.out); // print a char and change line pr.println(c); pr.println('b'); // flush the stream pr.flush(); } } Output: a b void println(char[] x): Prints an array of characters and then terminate the line. Syntax :public void println(char[] x) import java.io.*; //Java program to demonstrate println(char[] x) method public class PrintWriterDemo { public static void main(String[] args) { char[] c = {'a', 'b', 'c'}; // create PrintWriter object PrintWriter pr= new PrintWriter(System.out); // print an array and change line pr.println(c); // flush the stream pr.flush(); } } Output: abc void println(double x): Prints a double and then terminate the line. Syntax :public void println(double x) import java.io.*; //Java program to demonstrate println(double x) method public class PrintWriterDemo { public static void main(String[] args) { double c = 176.348; // create PrintWriter object PrintWriter pr= new PrintWriter(System.out); // print a double and change line pr.println(c); // flush the stream pr.flush(); } } Output: 176.348 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 PrintWriterDemo { public static void main(String[] args) { float c = 5.76348f; // create PrintWriter object PrintWriter pr= new PrintWriter(System.out); // print a float and change line pr.println(c); // flush the stream pr.flush(); } } Output: 5.76348 void println(int x): Prints an integer and then terminate the line. Syntax :public void println(boolean x) import java.io.*; //Java program to demonstrate println(int x) method public class PrintWriterDemo { public static void main(String[] args) { int c = 15; // create PrintWriter object PrintWriter pr= new PrintWriter(System.out); // print an integer and change line pr.println(c); // flush the stream pr.flush(); } } Output: 15 void println(long x): Prints a long integer and then terminate the line. Syntax :public void println(long x) import java.io.*; //Java program to demonstrate println(long x) method public class PrintWriterDemo { public static void main(String[] args) { long c = 1252344125l; try { // create PrintWriter object PrintWriter pr= new PrintWriter(System.out); // print a long and change line pr.println(c); // flush the stream pr.flush(); } catch (Exception ex) { ex.printStackTrace(); } } } Output: 1252344125 void println(Object x) :Prints an Object and then terminate the line. Syntax :public void println(Object x) import java.io.*; //Java program to demonstrate println(Object x) method public class PrintWriterDemo { public static void main(String[] args) { Object c = 10; // create PrintWriter object PrintWriter pr= new PrintWriter(System.out); // print an object and change line pr.println(c); // flush the stream pr.flush(); } } Output: 10 void println(String x) :Â Prints a String and then terminate the line. Syntax :public void println(boolean x) import java.io.*; //Java program to demonstrate println(String x) method public class PrintWriterDemo { public static void main(String[] args) { String c = "GeeksforGeeks"; // create PrintWriter object PrintWriter pr= new PrintWriter(System.out); // print a string and change line pr.println(c); // flush the stream pr.flush(); } } Output: GeeksforGeeks protected void setError() :Â Sets the error state of the stream to true. Syntax :public void println(String x) import java.io.*; //Java program to demonstrate setError() method public class PrintWriterDemo extends PrintWriter { public PrintWriterDemo(OutputStream out) { super(out); } public static void main(String[] args) { char c[] = {70, 71, 72, 73, 74, 75, 76}; // create PrintWriter object PrintWriterDemo pr= new PrintWriterDemo(System.out); // write char 1-3 pr.write(c, 1, 3); // flush the stream pr.flush(); // set an internal error pr.setError(); } } Output: GHI void write(char [] buf, int off, int len) :Â Writes len char from the specified char array starting at offset off to this stream. Syntax :public void write(char [] buf, int off, int len) Overrides: write in class FilterOutputStream Parameters: buf - A char array off - Offset from which to start taking char len - Number of char to write import java.io.*; //Java program to demonstrate write() method public class PrintWriterDemo { public static void main(String[] args) { char c[] = {70, 71, 72, 73, 74, 75, 76}; // create PrintWriter object PrintWriter pr= new PrintWriter(System.out); // write char 1-3 pr.write(c, 1, 3); // flush the stream pr.flush(); } } Output: GHI void write(int b) :Â Writes the specified char to this stream. Syntax :public void write(int b) Overrides: write in class Writer Parameters: b - The char to be written import java.io.*; //Java program to demonstrate write(int b) method public class PrintWriterDemo { public static void main(String[] args) { int c = 70; // create PrintWriter object PrintWriter pr= new PrintWriter(System.out); // write char c which is character F in ASCII pr.write(c); // flush the stream pr.flush(); } } Output: F void write(String s) : Writes a string. Syntax :public void write(String s) Parameters: s - String to be written import java.io.*; public class PrintWriterDemo { public static void main(String[] args) { String s = "Hello"; try { // create a new writer PrintWriter pw = new PrintWriter(System.out); // write strings pw.write(s); pw.write(" World"); // flush the writer pw.flush(); } catch (Exception ex) { ex.printStackTrace(); } } } Hello World void write(String s, int off, int len) : Writes a portion of a string. Syntax :public void write(String s, int off, int len) Parameters: s - A String off - Offset from which to start writing characters len - Number of characters to write import java.io.*; public class PrintWriterDemo { public static void main(String[] args) { String s = "Hello World"; try { // create a new writer PrintWriter pw = new PrintWriter(System.out); // write substrings pw.write(s, 0, 5); pw.write(s, 6, 5); // flush the writer pw.flush(); } catch (Exception ex) { ex.printStackTrace(); } } } HelloWorld rt Like Article Suggest improvement Next Java.io.PrintWriter class in Java | Set 1 Share your thoughts in the comments Add Your Comment Please Login to comment...