point.comJava DataOutputStream Class
DataOutputStream allows you to write primitive data to the output stream. It implements the DataOutput interface. DataOutput interface defines a method to convert primitive values into a sequence of bytes.
Syntax:
public class DataOutputStream extends FilterOutputStream implements DataOutput
To create an OutputStream
DataOutputStream out = DataOutputStream(OutputStream out);
DataOutputStream Class Methods
| S.No | Method | Description |
|---|---|---|
| 1 | Public final int write(byte [] b) | It is used to writes the current number of bytes written to this data output stream. |
| 2 | void writeByte(int m) | It is used to write a byte to the output stream |
| 3 | public final void write(byte[] w, int off, int len) | It is used to write len bytes of data to the output stream. |
| 4 | public final void writeBoolean(boolean b) | It is used to write Boolean to the output stream as a 1-byte value. |
| 5 | Public final void writeBytes(String s) | It is used to write string to the output stream as a sequence of bytes. |
| 6 | Public void flush() | It is used to flushes the data output stream. |
Example:
import java.io.*;
public class DataOutputStreamDemo {
public static void main(String args[]) throws IOException{
FileOutputStream fout = new FileOutputStream("Out.txt");
DataOutputStream out = new DataOutputStream(fout);
out.writeInt(100);
out.flush();
out.close();
System.out.println("Success");
}
}
Output
Success
Out.txt
100
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