UNIX "diff" as a Java fuction or API ?

Hi,
I want to compare compare / differentiate two files and get a result like from the UNIX "diff"... all this as a Java API, function or tool. Does somebody know about something that could help ???
thanks
Kevin

Well, it's for a prototype under Windows NT/2000... I got the cygwin Windows port of "diff", but a Java API would be most convenient I think.
Further I will also need something for a binary differentiation...
Kevin

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2. I also need to capture the output of this shell script in my program.
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Thanks in Advance.

Hi...
Something is missing here
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Setting the view mode to "AllView" helped.
Thanks for the lead!
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[svn] 2142: swfutils: Somehow a Java 1.5 API (Integer.valueOf(int)) slipped into the 30x branch, and has only sporadically caused build problems.

Revision: 2142
Author: [email protected]
Date: 2008-06-18 15:17:01 -0700 (Wed, 18 Jun 2008)
Log Message:
swfutils: Somehow a Java 1.5 API (Integer.valueOf(int)) slipped into the 30x branch, and has only sporadically caused build problems.
* By "somehow" I mean it was my injection :)
* Apparently this compiles in 1.4.2 on a Mac, go figure? I assume Windows JDK doesn't accept it.
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Reviewer: Matt, community folks
Bugs: n/a
QA: no
Doc: no
Modified Paths:
flex/sdk/branches/3.0.x/modules/swfutils/src/java/flash/swf/tools/SwfxPrinter.java

Revision: 2142
Author: [email protected]
Date: 2008-06-18 15:17:01 -0700 (Wed, 18 Jun 2008)
Log Message:
swfutils: Somehow a Java 1.5 API (Integer.valueOf(int)) slipped into the 30x branch, and has only sporadically caused build problems.
* By "somehow" I mean it was my injection :)
* Apparently this compiles in 1.4.2 on a Mac, go figure? I assume Windows JDK doesn't accept it.
* Replaced it with 'new Integer(int)'
Reviewer: Matt, community folks
Bugs: n/a
QA: no
Doc: no
Modified Paths:
flex/sdk/branches/3.0.x/modules/swfutils/src/java/flash/swf/tools/SwfxPrinter.java

Problem with too small page size using Java 2D Printing API.

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Can New Java 7 File API Path Objs Be Used For Windows Virtual Folders

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static public void main(final String[] asArguments)
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               for (int nIdx = 0; nIdx < rootDirs.length; nIdx++) {
                    java.io.File nextRoot = rootDirs[nIdx];
                    System.out.printf("File obj for next root dir = %s\r\n", nextRoot.getAbsolutePath());
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                    //          like "My Computer" which has a filename of "::{20D04FE0-3AEA-1069-A2D8-08002B30309D}",
                    //          why do we receive a "java.nio.file.InvalidPathException"? Should it not resolve the path
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} // mainEdited by: RhinoGuy on Aug 10, 2012 11:11 AM

Hmm don't know about special folders but the File object does have a listRoots() method. Perhaps that only returns mapped drives on Windows though, I remember using it to create my own Eclipse type filechooser which I find a lot more user-friendly than the standard JFileChooser.

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Carsten Bluetner

Java Print Service API in Java Stored Procedure (Linux)

Hi
We are running an Oracle 10g database on Linux and I am in the proces of developing a java stored procedure which should utilize the Java Print Service API.
I have made a simple stored procedure to list all available printers and the DocFlavors they support (se the code below).
My problem is that no printers are listed. I have made a standalone java app. with the same code and executed it directly on the OS level of the Linux box through the Sun JDK 1.4.2 and here I get two printers.
Is there any specific configuration I need to do to make it work?
I am wondering if I need to grant specific authorisations through dbms_java for it to work...?
Any help is greatlyh appreciated.
************************************** CODE BEGIN *************************************
import javax.print.DocFlavor;
import javax.print.PrintService;
import javax.print.PrintServiceLookup;
import javax.print.attribute.HashPrintRequestAttributeSet;
import javax.print.attribute.PrintRequestAttributeSet;
public class TestPrintService {
public TestPrintService() {
public static void listPrinters() {
// Get all available printers and their supported DocFlavors
PrintService[] pservices =
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System.out.println("Printer services: " + pservices.length);
for (int i = 0; i < pservices.length; i++) {
PrintService pservice = pservices;
System.err.println("Printer: " + pservice);
DocFlavor[] docFlavors = pservice.getSupportedDocFlavors();
for (int j = 0; j < docFlavors.length; j++) {
DocFlavor docFlavor = docFlavors[j];
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************************************** CODE END *************************************
Cheers,
Jacob Vennervald

Found this on Oracle support:
Cannot List Available Printers From The Database Using A Java Stored Procedure [ID 372694.1]
Applies to:
Oracle Server - Enterprise Edition - Version: 10.1.0.4.0
This problem can occur on any platform.
Symptoms
Able to list available printers on a machine when running Java code outside the Database.
When running the same Java code inside the Database as a Java Stored Procedure, no printers are found.
Cause
Due to security restrictions, this is expected results.
The Java Docs state:
"Services which are registered by registerService(PrintService) will not be included in lookup
results if a security manager is installed and its CheckPrintJobAccess() method denies access."
Also from the documentation it states:
"A PrintServiceLookup implementor is recommended to check for the SecurityManager.checkPrintJobAccess() to deny access to untrusted code. Following this recommended policy means that untrusted code may not be able to locate any print services. Downloaded applets are the most common example of untrusted code."
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Solution
Run the following code to confirm obtaining available __printers can not be done...__
This is the code to create the Java Stored Procedure
CREATE OR REPLACE AND RESOLVE JAVA SOURCE NAMED "ListPrinters" AS
import javax.print.*;
public class ListPrinters {
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String strList;
PrintService[] pservices =PrintServiceLookup.lookupPrintServices(null,null);
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strList = pservices[0].getName();
else
strList = "No printers found";
return strList;
public static String listprinters() throws Exception {
String listofprinters;
try {
SecurityManager sm = System.getSecurityManager();
if (sm != null) sm.checkPrintJobAccess();
catch (SecurityException ex) {
System.err.println("Sorry. Printing is not allowed.");
listofprinters = AvailablePrinters();
return listofprinters;
This is the PL/SQL Wrapper
CREATE OR REPLACE FUNCTION Get_Printer_Test RETURN VARCHAR2 IS
LANGUAGE JAVA
NAME 'ListPrinters.listprinters() return String';
This executes the code
SQL> SELECT Get_Printer_Test FROM DUAL;
GET_PRINTER_TEST
No printers found
This is the output found in the trace file in the UDUMP directory
*** SESSION ID:(144.28) 2006-07-08 09:02:25.518
Sorry. Printing is not allowed.

How to execute unix shell script from Java ...

Hi,
Anyone know how to execute unix shell script from Java?
Suppose I have several shell scripts written in perl or tcl or bash.
I just want to catch the output of that script.
Is there any ready to use module/object for this?
Please let me know, this is quite urgent for my study assigment.
Thanks in advance,
Regards,
me

Look up Runtime.exec()

Running a Unix script from a Java class

I am trying to use SCP (Secure copy) to copy an xml file from my J2EE application to a remote Unix server using a Unix script. How can I run the Unix script from my Java class? I could not find any resource for this on the internet. Can someone help me with this please.
Thanks

I am trying this below program ,but i am getting the error please help me
import com.jcraft.jsch.*;
import com.jcraft.jsch.Channel;
import com.jcraft.jsch.JSch;
//import com.jcraft.jsch.JSchException;
import com.jcraft.jsch.Session;
//import com.jcraft.jsch.UserInfo;
import java.io.*;
public class testrad {
public static void main(String args[])
String user="usertvr";
String host="5.34.12.1";
String cmd="ls -l";
JSch jsch = new JSch();
try{
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session.setPassword("$yhaj23");
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//session.setUserInfo(usrInfo);
session.connect();
Channel channel=session.openChannel("exec");
((ChannelExec) channel).setCommand(cmd);
channel.setXForwarding(true);
channel.connect();
//code
channel.setInputStream(System.in);
// channel.setOutputStream(System.out);
//((ChannelExec) channel).setErrStream(System.err);
InputStream in = channel.getInputStream();
channel.connect();
byte[] tmp = new byte[1024];
while (true)
while (in.available() > 0)
int i = in.read(tmp, 0, 1024);
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System.out.print(new String(tmp, 0, i));
if (channel.isClosed())
in.close();
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break;
try
Thread.sleep(1000);
catch (Exception ee)
channel.disconnect();
session.disconnect();
}catch(Exception e)
{e.printStackTrace();
System.out.println("Exception"+e);}
/*public static class MyUserInfo implements UserInfo {
public String getPassword()
{ return "password"; }
public String getPassphrase()
{ return ""; }
public boolean promptPassword(String arg0)
{ return true; }
public boolean promptPassphrase(String arg0)
{ return true; }
public boolean promptYesNo(String arg0)
{ return true; }
public void showMessage(String arg0)
Here is the error
com.jcraft.jsch.JSchException: UnknownHostKey: 5.128.0.10. RSA key fingerprint is 02:a0:d6:c0:6f:69:2c:a9:a7:fa:7c:71:1c:60:ed:57
     at com.jcraft.jsch.Session.checkHost(Unknown Source)
     at com.jcraft.jsch.Session.connect(Unknown Source)
     at com.jcraft.jsch.Session.connect(Unknown Source)
     at testrad.main(testrad.java:23)
Exceptioncom.jcraft.jsch.JSchException: UnknownHostKey: 5.128.0.10. RSA key fingerprint is 02:a0:d6:c0:6f:69:2c:a9:a7:fa:7c:71:1c:60:ed:57
Can some one help me please.
I running this program from Windows to connect to remote unix boxes.

UNIX "diff" as a Java fuction or API ?

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