File Input and Output Stream
import Java.io.*;
class FileIO {
public static void main(String[] args) {
System.out.println("Enter some numbers.");
StreamTokenizer st = new StreamTokenizer(
new BufferedReader(new InputStreamReader(System.in)));
File f = new File("temp.out");
int numberCount = 0;
try {
DataOutputStream dos = new DataOutputStream(
new BufferedOutputStream(new FileOutputStream(f)));
while (st.nextToken() != st.TT_EOF) {
if (st.ttype == st.TT_NUMBER) {
dos.writeDouble(st.nval);
numberCount++;
}
}
System.out.println("numberCount=" + numberCount);
dos.flush();
dos.close();
DataInputStream dis = new DataInputStream(
new BufferedInputStream(new FileInputStream(f)));
for (int i = 0; i
System.out.println("number=" + dis.readDouble());
}
dis.close();
} catch (IOException e) {
System.err.println("FileIO: " + e);
} finally {
f.delete();
}
}
}
/* ............... Example compile and run(s)
% javac file.java
% java FileIO
Enter some numbers.
1 2 3
4.4 5.5
6.67
^D
numberCount=6
number=1.0
number=2.0
number=3.0
number=4.4
number=5.5
number=6.67
... end of example run(s) */
