This is a class designed for writing to character streams in a generic manner. Subclasses are required to implement the following methods: write(char, int, int), flush, and close. Typically, subclasses will customize these methods to enhance performance, features, or both.
Fields
| Modifier and Type | Field | Description |
|---|---|---|
| protected Object | lock | The object used to synchronize operations on this stream. |
Constructor
| Modifier | Constructor | Description |
|---|---|---|
| protected | Writer() | It creates a new character-stream writer whose critical sections will synchronize on the writer itself. |
| protected | Writer(Object lock) | It creates a new character-stream writer whose critical sections will synchronize on the givenobject. |
Methods
| Modifier and Type | Method | Description |
|---|---|---|
| Writer | append(char c) | It appends the specified character to this writer. |
| Writer | append(CharSequence csq) | It appends the specified character sequence to this writer |
| Writer | append(CharSequence csq, int start, int end) | It appends a subsequence of the specified character sequence to this writer. |
| abstract void | close() | It closes the stream, flushing it first. |
| abstract void | flush() | It flushes the stream. |
void |
write(char[] cbuf) | It writes anarrayof characters. |
| abstract void | write(char[] cbuf, int off, int len) | It writes a portion of an array of characters. |
void |
write(int c) | It writes a single character. |
void |
write(String str) | It writes astring. |
void |
write(String str, int off, int len) | It writes a portion of a string. |
Java Writer Example
Example
import java.io.*;
public class WriterExample {
public static void main(String[] args) {
try {
Writer w = new FileWriter("output.txt");
String content = "I love my country";
w.write(content);
w.close();
System.out.println("Done");
} catch (IOException e) {
e.printStackTrace();
}
}
}
Output:
output.txt:
Output
I love my country
