Why wont this work?

d6

basically just creating and reading binary files using the class Worker.
It compiles however i get null 0.0 instead of ben 500.0
i know its annoyong to look through longish code but any pointers would be a help


import java.io.*;

class Worker {
private String name;
private double wage;

Worker() {
}

Worker(String s, double w) {
name = s; wage = w;
}

void Put(DataOutputStream dos) {
// write name & age attributes to dos (at file pointer)
try {

dos.writeUTF(name);dos.writeDouble(wage);

} catch (IOException e) {
}
}

void get(DataInputStream dis) {
// read name & age attributes from file dis (at file pointer,
// which is assumed < file size)
try {

dis.readUTF();
dis.readDouble();
} catch (IOException e) {
}
}

void put(){ // display on screen
System.out.println(name + " " + wage);
}
}


class Wages {

public static void main(String[] args) {
try {
// Create a file called "wages.dat" with records for Ben
// who earns 203.31, Mary who earns 187.56, & Fred who
// earns 203.31
DataOutputStream out = new DataOutputStream(new FileOutputStream("wages.dat"));
Worker w = (new Worker("ben",500.00));
w.Put(out);
out.close();




} catch (IOException e) {
}
}
}
import java.io.*;

class Wages1{

public static void main(String[] args) {

try {
DataInputStream in = new DataInputStream(new FileInputStream("wages"));

Worker w = new Worker();
while(in.available() > 0)
{
w.get(in);
w.put();
}

in.close();

// Display the contents of the file

} catch (IOException e) {
}


}
}

NotMe

Use [ code][ /code] tags.

Anyway this part you're reading the values from the file but not assigning them to variables.
ie. name = dis.readUTF();

try {
   dis.readUTF();
   dis.readDouble();
} catch (IOException e) {
}

h57xiucj2z946q

try {
DataInputStream in = new DataInputStream(new FileInputStream("wages"));

should that be wages.dat ?

Creamy Goodness

any console errors?

they usually tell you what and where you are going wrong.

d6

NotMe was spot on cheers.
say i added a couple more names accomanied by their wage how wud i go about to print out the name of the highest earner?

dzy

While reading in the workers, keep track of the current highest wage and the name of the worker who earns that wage. At the end, print out the name.

d6

do i create a method or should i try do it the main method?

d6

ok got it thanks 4 the help

damnyanks

Hey I'm not sure what you're using to write this code. I would however suggest using eclipse or netbeans. You can then stick in some breakpoints and step through the code to find logic problemss quickly.