| java.lang.Object | |||||||||||||||||||||||||||||||||||||||||||||||||
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| | | - | - | java.io.Writer | ||||||||||||||||||||||||||||||||||||||||||||||
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| | | - | - | java.io.PrintWriter | ||||||||||||||||||||||||||||||||||||||||||||||
Prints formatted representations of objects to a text-output stream.
| Constructor | Summary |
|---|---|
| PrintWriter(File file) | Creates a new PrintWriter, without automatic line flushing, with the specified file. |
| PrintWriter(File file, String csn) | Creates a new PrintWriter, without automatic line flushing, with the specified file and charset. |
| PrintWriter(OutputStream out) | Creates a new PrintWriter, without automatic line flushing, from an existing OutputStream. |
| PrintWriter(OutputStream out, boolean autoFlush) | Creates a new PrintWriter from an existing OutputStream. |
| PrintWriter(String fileName) | Creates a new PrintWriter, without automatic line flushing, with the specified file name. |
| PrintWriter(String fileName, String csn) | Creates a new PrintWriter, without automatic line flushing, with the specified file name and charset. |
| PrintWriter(Writer out) | Creates a new PrintWriter, without automatic line flushing. |
| PrintWriter(Writer out, boolean autoFlush) | Creates a new PrintWriter. |
| Return | Method | Summary |
|---|---|---|
| PrintWriter | append(char c) | Appends the specified character to this writer. |
| PrintWriter | append(CharSequence csq) | Appends the specified character sequence to this writer. |
| PrintWriter | append(CharSequence csq, int start, int end) | Appends a subsequence of the specified character sequence to this writer. |
| boolean | checkError() | Flushes the stream if it's not closed and checks its error state. |
| void | close() | Closes the stream and releases any system resources associated with it. |
| void | flush() | Flushes the stream. |
| PrintWriter | format(Locale l, String format, Object... args) | Writes a formatted string to this writer using the specified format string and arguments. |
| PrintWriter | format(String format, Object... args) | Writes a formatted string to this writer using the specified format string and arguments. |
| void | print(boolean b) | Prints a boolean value. |
| void | print(char c) | Prints a character. |
| void | print(char[] s) | Prints an array of characters. |
| void | print(double d) | Prints a double-precision floating-point number. |
| void | print(float f) | Prints a floating-point number. |
| void | print(int i) | Prints an integer. |
| void | print(long l) | Prints a long integer. |
| void | print(Object obj) | Prints an object. |
| void | print(String s) | Prints a string. |
| 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. |
| PrintWriter | printf(String format, Object... args) | A convenience method to write a formatted string to this writer using the specified format string and arguments. |
| void | println() | Terminates the current line by writing the line separator string. |
| void | println(boolean x) | Prints a boolean value and then terminates the line. |
| void | println(char x) | Prints a character and then terminates the line. |
| void | println(char[] x) | Prints an array of characters and then terminates the line. |
| void | println(double x) | Prints a double-precision floating-point number and then terminates the line. |
| void | println(float x) | Prints a floating-point number and then terminates the line. |
| void | println(int x) | Prints an integer and then terminates the line. |
| void | println(long x) | Prints a long integer and then terminates the line. |
| void | println(Object x) | Prints an Object and then terminates the line. |
| void | println(String x) | Prints a String and then terminates the line. |
| void | write(char[] buf) | Writes an array of characters. |
| void | write(char[] buf, int off, int len) | Writes A Portion of an array of characters. |
| void | write(int c) | Writes a single character. |
| void | write(String s) | Writes a string. |
| void | write(String s, int off, int len) | Writes a portion of a string. |
Create PrintWriter from System.out
import java.io.PrintWriter;
public class Main {
public static void main(String args[]) throws Exception {
PrintWriter pw = new PrintWriter(System.out);
pw.println(true);
pw.println('A');
pw.println(500);
pw.println(40000L);
pw.println(45.67f);
pw.println(45.67);
pw.println("Hello");
pw.println(new Integer("99"));
pw.close();
}
}
The output:
true
A
500
40000
45.67
45.67
Hello
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