Give Description for WriteInt
Give Description for WriteInt
Solution:
The java.io.DataOutputStream.writeInt(int v) : this method writes a integer value to the underlying stream of data as 4 bytes.
The counter is incremented by 4 on successful invocation of this method.
Declaration: public final void writeInt(int v)
Parameters: v - an integer value to be written to output screen.
This method does not return any values.
Example:
Program:
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
public class DataOutputStreamDemo {
public static void main(String[] args) throws IOException {
InputStream is = null;
DataInputStream dis = null;
FileOutputStream fos = null;
DataOutputStream dos = null;
int[] i = {100,200,300,400,500};
try {
// create file output stream
fos = new FileOutputStream("c:\\test.txt");
// create data output stream
dos = new DataOutputStream(fos);
// for each int in int buffer
for(int j:i) {
// writes integers to data output stream
dos.writeInt(j);
}
// force data to the underlying file output stream
dos.flush();
// create file input stream
is = new FileInputStream("c:\\test.txt");
// create new data input stream
dis = new DataInputStream(is);
// available stream to be read
while(dis.available()>0) {
// read four bytes from data input, return int
int k = dis.readInt();
System.out.print(k+" ");
}
} catch(Exception e) {
// if any error occurs
e.printStackTrace();
} finally {
// releases all system resources from the streams
if(is!=null)
is.close();
if(dis!=null)
dis.close();
if(fos!=null)
fos.close();
if(dos!=null)
dos.close();
}
}
}
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