Want to win a PS4? Go Premium and enter to win our High-Tech Treats giveaway. Enter to Win

x
?
Solved

Logon user name using API for window95

Posted on 1998-07-21
9
Medium Priority
?
207 Views
Last Modified: 2010-03-30
SDK : JDK1.1.1.5
Development Platform : windows95

I don't know how can I use API in JAVA which I was using in VB5.
I just want to get logon user login name and IP address?
0
Comment
Question by:raza
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 5
  • 4
9 Comments
 
LVL 5

Accepted Solution

by:
msmolyak earned 80 total points
ID: 1227284
Java is cross-platform that is why it does not provide any system-specific infromation like user name. As for the IP address it is:

InetAddress.getLocalHost().getHostAddress()

If you need to talk to Windows API you can probably do it using native calls.

Let me know if you need more info.
0
 

Author Comment

by:raza
ID: 1227285
thanks
if it is  posible then please send me info about how to read windows text file from windows dirctory ?
0
 
LVL 5

Expert Comment

by:msmolyak
ID: 1227286
I might be wrong on the first account. To get the user's name try

Properties props = System.getProperties();
String username = props.getProperty("user.name");

This assumes that you are running a Java application which is allowed to read the system properties. Applets can read only some properties, the user.name is probably not one of them

Let me know if you still need the info on reading the text files.
0
What does it mean to be "Always On"?

Is your cloud always on? With an Always On cloud you won't have to worry about downtime for maintenance or software application code updates, ensuring that your bottom line isn't affected.

 

Author Comment

by:raza
ID: 1227287
thanks
if it is  posible then please send me info about how to read windows text file from windows dirctory ?
0
 
LVL 5

Expert Comment

by:msmolyak
ID: 1227288
BufferedReader reader = new BufferedReader(FileReader(filename));

String line;
while((line = reader.readLine()) != null)
{
  // Process the line
}

0
 

Author Comment

by:raza
ID: 1227289
would u please help me to debug it out
I m getting below 3 erorrs

Compiling D:\jdk1.1.5\Program\Logonuser\Logonuser.java
D:\jdk1.1.5\Program\Logonuser\Logonuser.java:16: Variable 'UserName' is already defined in this method.
            String UserName = props.getProperty("user.name");
                   ^
D:\jdk1.1.5\Program\Logonuser\Logonuser.java:22: Invalid type expression.
            System.out.println(UserName)
                              ^
D:\jdk1.1.5\Program\Logonuser\Logonuser.java:23: Invalid declaration.
            g.drawString("Hello Logonuser!", j50, 50);
                        ^
3 errors
Finished

/* here is source
=========*/
import java.awt.*;
import java.util.Properties;
public class Logonuser extends java.applet.Applet
{
      public void init()
      {
            String UserName;
            Properties props = System.getProperties();
            String UserName = props.getProperty("user.name");
            resize(300,300);
      }

      public void paint(Graphics g)
      {
            System.out.println(UserName)

      }
}



0
 

Author Comment

by:raza
ID: 1227290
I m sorry above is wrong posting the currect one is below



Compiling D:\jdk1.1.5\Program\Logonuser\Logonuser.java
D:\jdk1.1.5\Program\Logonuser\Logonuser.java:11: Variable 'UserName' is already defined in this method.
            String UserName = props.getProperty("user.name");
                   ^
D:\jdk1.1.5\Program\Logonuser\Logonuser.java:17: Undefined variable: UserName
            System.out.println(UserName);
                               ^
2 errors
Finished






import java.awt.*;
import java.util.Properties;

public class Logonuser extends java.applet.Applet
{
      public void init()
      {
            String UserName;
            Properties props = System.getProperties();
            String UserName = props.getProperty("user.name");
            resize(300,300);
      }

      public void paint(Graphics g)
      {
            System.out.println(UserName);
      }
}



0
 
LVL 5

Expert Comment

by:msmolyak
ID: 1227291
      import java.awt.*;
       import java.util.Properties;
       public class Logonuser extends java.applet.Applet
       {
       String UserName;
       public void init()
       {
       Properties props = System.getProperties();
       UserName = props.getProperty("user.name");
       resize(300,300);
       }

       public void paint(Graphics g)
       {
       System.out.println(UserName)

       }
       }

I doubt though an applet can read the user name.
0
 

Author Comment

by:raza
ID: 1227292
I m sorry above is wrong posting the currect one is below



Compiling D:\jdk1.1.5\Program\Logonuser\Logonuser.java
D:\jdk1.1.5\Program\Logonuser\Logonuser.java:11: Variable 'UserName' is already defined in this method.
            String UserName = props.getProperty("user.name");
                   ^
D:\jdk1.1.5\Program\Logonuser\Logonuser.java:17: Undefined variable: UserName
            System.out.println(UserName);
                               ^
2 errors
Finished






import java.awt.*;
import java.util.Properties;

public class Logonuser extends java.applet.Applet
{
      public void init()
      {
            String UserName;
            Properties props = System.getProperties();
            String UserName = props.getProperty("user.name");
            resize(300,300);
      }

      public void paint(Graphics g)
      {
            System.out.println(UserName);
      }
}



0

Featured Post

Industry Leaders: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

INTRODUCTION Working with files is a moderately common task in Java.  For most projects hard coding the file names, using parameters in configuration files, or using command-line arguments is sufficient.   However, when your application has vi…
Introduction Java can be integrated with native programs using an interface called JNI(Java Native Interface). Native programs are programs which can directly run on the processor. JNI is simply a naming and calling convention so that the JVM (Java…
Viewers learn about the scanner class in this video and are introduced to receiving user input for their programs. Additionally, objects, conditional statements, and loops are used to help reinforce the concepts. Introduce Scanner class: Importing…
Viewers will learn about the regular for loop in Java and how to use it. Definition: Break the for loop down into 3 parts: Syntax when using for loops: Example using a for loop:
Suggested Courses

618 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question