How to retrieve CPU id in linux using java?

Hello everyone!!
I want to retrieve CPU Id from a liux system using java code.
Please reply with code if possible.
Thank you in advance.

Open "/proc/cpuinfo" and parse.

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Problem of accesing MS Acess database on Linux using Java

Below is my java code and errors found. Can anyone guide me tell me what is the problem and how to success access the .mdb file using Java on Linux?
import java.sql.*;
class readmdb
{      public static void main(String[] args)
{    String url;
Connection con;
Statement stmt;
try
{     Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
catch(java.lang.ClassNotFoundException e)
{    System.out.print("ClassNotFoundException: ");
System.out.println(e.getMessage());
try
{     con = DriverManager.getConnection("jdbc:odbc:DRIVER={/usr/local/lib/libmdbodbc.o.O}};DBQ=/home/powerstation/db/Database.mdb");
stmt = con.createStatement();
stmt.close();
con.close();
catch(SQLException ex)
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Errors messages found after i executed the java code
shown above on linux platform.
Exception in thread "main"
java.lang.NullPointerException
at sun.jdbc.odbc.JdbcOdbcDriver.initialize(JdbcOdbcDriver.java:436)
at sun.jdbc.odbc.JdbcOdbcDriver.connect(JdbcOdbcDriver.java:153)
at java.sql.DriverManager.getConnection(DriverManager.java:512)
atjava.sql.DriverManager.getConnection(DriverManager.java:193)
at readmdb.main(readmdb.java:27)

jschell,
ODBC shell is the odbc.ini or odbcinst.ini? No.
The shell is something that you explicitly installed. Just like you installed Apache, or perl, or a C++ compiler, or even a CD driver.
If yes,
What is the difference between odbc.in and
odbcinst.ini? No idea. But on a windows box those are ini files that specify odbc info. I don't think ini files are going to help on linux.
Which of them will be execute when i
want to establish a connection using "jdbc:odbc:...."
in DriverManager.getConnection?I am rather sure that neither of them would 'execute'
>
Is it MS Access ODBC linux driver is the file like
libodbc.so, libmdbodbc.so, libmdbsql.so and so on?No idea, but I doubt it.
What makes you think that you even have a MS Access ODBC linux driver on your box?
Then, can u tell me which is MS Access ODBC linux
driver or what is the driver file name for MS Access
ODBC linux driver?Nope.
If you installed a MS Access ODBC linux driver, then the ODBC shell will know where it is.
And if you did install such a driver you should post the link where you got it here, because as far as I know, there is no such driver (nor is there one for MS SQL Server.)

Open a PDF file in linux using java

Hi..
How can I open a PDF file in linux using java.
I am able to open PDF in windows and mac using this code
in Windows
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in mac
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Please help
Thanks

One thread is enough:
http://forum.java.sun.com/thread.jspa?threadID=5267458

Open PDF file in linux using java

Hi..
How can I open a PDF file in linux using java.
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How to pass Cascading Parameter in SSRS using Java

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Take a look at set_custom_property:
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public boolean setProperty(ID pid, Object value)
if (pid == SETTEXT)
String text = value.toString();
and in forms
set_custom_property('beans.bean_item', 1, 'SETTEXT', 'some text');
cheers

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How to Store word doc in oracle using java

hi
toall
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bye

Please refer to
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How to extract .sit files(in MAC) using java program

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How to force the Netscape browser to use Java Plug-in 1.3.0_02?

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How to run SQL script file on Linux using Java ?

Hi,
I need to execute .sql file using java. I used following approach for this.
private void runScriptEvent(java.awt.event.ActionEvent evt) {
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            String password = jPasswordField1.getText();
            String databaseName = jTextField3.getText();
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                                    return true;
                                    return false;
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System.out.println("Function Name = "+currentFunctionName + "\t Extention = " + extention);
processBuilder = new ProcessBuilder("sqlplus",userName+"/"+password+"@"+databaseName, script_location); //ORACLE
processBuilder.redirectErrorStream(true);
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sqlPromptLines = " "+sqlPromptLines + currentLine +"\n";
count ++;
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break;
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Above code working appropriate on Windows but not on Linux.
is there any changes needed ?
Regards,
Ajay
Edited by: Ajay Sharma on Nov 21, 2012 6:43 PM

Hi gimbal2,
about code
jTextArea1.setText(e1.getMessage());I am using this code so that the user will be prompted with a message rather than stack trace.
About the issue I am getting on linux i believe its because of following statement.
processBuilder = new ProcessBuilder("sqlplus",userName+"/"+password+"@"+databaseName, script_location); //ORACLERegards,
Ajay
Edited by: Ajay Sharma on Nov 23, 2012 12:05 PM
Edited by: Ajay Sharma on Nov 23, 2012 12:06 PM

How to set Develoment Environmnet in Linux using Tomcat for Application

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/opt/tomcat/eprosys/WEB-INF/classes
/web.xml
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docBase="opt/tomcat/eprosys"
reloadable="true"
debug="0"/>
</Host>
then i started tomcat
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Using CATALINA_HOME: /opt/tomcat
Using CATALINA_TMPDIR: /opt/tomcat/temp
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I get this message .
HTTP Status 404 - /project/
type Status report
message /project/
description The requested resource (/project/) is not available
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But in Linux i face problem,
Bye,
Prabhat

aiGrace wrote:
I want to set the options "-server -Xms128m -Xmx512m -Dcom.sun.management.jmxremote.port=8999 -Dcom.sun.management.jmxremote.authenticate=false -Dcom.sun.management.jmxremote.ssl=false -Djava.rmi.server.hostname=11.40.5.62" as my java default options so that I only have to use
java -classpath . HelloWorldUse the *nix alias command
alias java="java -server -Xms128m -Xmx512m -Dcom.sun.management.jmxremote.port=8999 -Dcom.sun.management.jmxremote.authenticate=false -Dcom.sun.management.jmxremote.ssl=false -Djava.rmi.server.hostname=11.40.5.62"

How to get comparable Oracle JDBC performance using Java 1.4 vs 1.1.7?

Our application makes extensive use of JDBC to access an Oracle database. We wrote it a number of years ago using java 1.1.7 and we have been unable to move to new versions of java because of the performance degradation.
I traced the problem to JDBC calls. I can reproduce the problem using a simple program that simply connects to the database, executes a simple query and then reads the data. The same program running under java 1.4 is about 60% slower than under java 1.1.7. The query is about 80% slower and getting the data is about 150% slower!
The program is attached below. Note, I run the steps twice as the first time the times are much larger which I attribute to java doing some initializations. So the second set of values I think are more representative of the actual performance in our application where there are numerous accesses to the database. Specifically, I focus on step 4 which is the execute query command and step 5 which is the data retrieval step. The table being read has 4 columns with 170 tuples in it.
Here are the timings I get when I run this on a Sparc Ultra 5 running
SunOs 5.8 using an Oracle database running 8.1.7:
                 java 1.1.7 java 1.4
        overall:    2.1s         3.5s
        step 1:     30           200
        step 2:    886          2009
        step 3:      2             2
        step 4:      9            17
        step 5:    122           187
        step 6:      1             1
        step 1:      0             0
        step 2:    203           161
        step 3:      0             1
        step 4:      8            15   <-   87% slower
        step 5:     48           117   <- 143% slower
        step 6:      1             2I find the same poor performance from java versions 1.2 and 1.3.
I tried using DataDirect's type 4 JDBC driver which gives a little better performance but overall it is still much slower than using java 1.1.7.
Why do the newer versions of java have such poor performance when using JDBC?
What can be done so that we can have performance similar to java 1.1.7
using java 1.4?
========================================================================
import java.util.*;
import java.io.*;
import java.sql.*;
public class test12 {
    public static void main(String args[]) {
        try {
                long time1 = System.currentTimeMillis();
/* step 1 */ DriverManager.registerDriver(
                    new oracle.jdbc.driver.OracleDriver());
                long time2 = System.currentTimeMillis();
/* step 2 */ Connection conn = DriverManager.getConnection (
              "jdbc:oracle:thin:@dbserver1:1521:db1","user1","passwd1");
                long time3 = System.currentTimeMillis();
/* step 3 */ Statement stmt = conn.createStatement();
                long time4 = System.currentTimeMillis();
/* step 4 */ ResultSet rs = stmt.executeQuery("select * from table1");
                long time5 = System.currentTimeMillis();
/* step 5 */ while( rs.next() ) {
                  int message_num = rs.getInt(1);
                  String message = rs.getString(2);
                long time6 = System.currentTimeMillis();
/* step 6 */ rs.close(); stmt.close();
                long time7 = System.currentTimeMillis();
            System.out.println("step 1: " + (time2 - time1) );
            System.out.println("step 2: " + (time3 - time2) );
            System.out.println("step 3: " + (time4 - time3) );
            System.out.println("step 4: " + (time5 - time4) );
            System.out.println("step 5: " + (time6 - time5) );
            System.out.println("step 6: " + (time7 - time6) );
            System.out.flush();
        } catch ( Exception e ) {
            System.out.println( "got exception: " + e.getMessage() );
        ... repeat the same 6 steps again...
}

If I run my sample program with the -server option, it
takes a lot longer (6.8s vs 3.5s).Which has to be expected, as the -server option optimizes for long running programs - so it shoudl go with my second suggestion, more below...
I am not certain what you mean by "just let the jvm
running". Our users issue a command (in Unix) which
invokes one of our java programs to access or update
data in a database. I think what you are suggesting
would require that I rewrite our application to have a
java program always running on the users workstation
and to also rewrite our
commands (over a hundred) to some how pass data and
receive data with this new server java program. That
does not seem a very reasonable just to move to a new
version of java. Or are you suggesting something
else?No I was just suggestion what you descript. But if this is not an option, then maybe you should merge your java-programs to C or another native language. Or you could try the IBM-JDK with the -faststart (or similar) option. If thew Unix you mention is AIX, then there would be the option of a resetable-vm. But I cannot say if this VM would solve your problem. Java is definitly not good for applications which only issue some unqiue commands because the hotspot-compiler can not be efficiently used there. You can only try to get 1.1.7 performance by experimenting with vm-parameters (execute java -X).

How to retrieve CPU id in linux using java?

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