No ocijdbc8 Error (RH71,ORA816,JDK1.3)

I meet same ploblem when change any element
for connect remote db:
Exception in thread "main" java.lang.UnsatisfiedLinkError: no ocijdbc8 in java.l
ibrary.path
at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1312)
at java.lang.Runtime.loadLibrary0(Runtime.java:749)
at java.lang.System.loadLibrary(System.java:820)
at oracle.jdbc.oci8.OCIDBAccess.logon(OCIDBAccess.java:209)
at oracle.jdbc.driver.OracleConnection.<init>(OracleConnection.java:198)
at oracle.jdbc.driver.OracleDriver.getConnectionInstance(OracleDriver.ja
va:251)
at oracle.jdbc.driver.OracleDriver.connect(OracleDriver.java:224)
at java.sql.DriverManager.getConnection(DriverManager.java:517)
at java.sql.DriverManager.getConnection(DriverManager.java:177)
at JdbcCheckup.main(JdbcCheckup.java:42)
the program is $ORACLE_HOME/jdbc/demo/samples/oci8/bisic_samplem/JdbcCheckup.java
OS: RH7.1(japanese)
JDK : JDK1.3(JDK1.2.2 dont work on RH71)
ORACLE: oracle EE816 for Linux
(libocijdbc8.so is in the $ORACLE_HOME/lib)
JDBC: classes12.zip for solaris(oracle816)
please help me,thank you.
xu
null

Xu Fang,
OCI8 (JDBC 1.2 'thick' driver) is not supported on Linux (8.1.5,8.1.6 or 8.1.7). You can use the thin driver, but not the OCI8 driver.
Regards,
Josue Amaro
Linux Product Manager
Oracle Corporation
<BLOCKQUOTE><font size="1" face="Verdana, Arial">quote:</font><HR>Originally posted by Xu FANG ([email protected]):
I meet same ploblem when change any element
for connect remote db:<HR></BLOCKQUOTE>
null

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I'm sorry to have to post my entire program, but I keep getting an error msg that points to a variable that is NOWHERE in my code. The var is called PwChar. It's mentioned in the error msg, but is nowhere in my code. This is even after saving and recompiling it THREE TIMES. Please, someone, tell me where this error appears in my code, if you even can. Your help will be greatly appreciated. Here is the error msg:
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PwGenerator.java:228: Incompatible type for =. Can't convert java.lang.Character
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^
2 errors
Now here is my code (sorry for the length):
// My Javafied Password Generator
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.util.*;
public class PwGenerator extends JApplet
private String pw;
private JPanel centerPanel, northPanel, southPanel;
private JComboBox numchars;
private JCheckBox lettersUpper, lettersLower, numbers, specialChars;
private JButton generate, reset;
private JTextField textfield;
private int asciiRange[], newAsciiRange[];
private String pwLength[] = {"6", "7", "8", "9", "10", "11", "12"};
private int lengthSelected;
private JLabel pwLabel, numCharLabel;
private boolean wantSpecialchars, wantNumbers, wantUppercase, wantLowercase;
public void init()
// instantiate widgets
asciiRange = new int[94];
numCharLabel = new JLabel("Number of characters for password");
numchars = new JComboBox(pwLength);
lettersUpper = new JCheckBox("Uppercase letters");
lettersLower = new JCheckBox("Lowercase letters");
numbers = new JCheckBox("Numbers");
specialChars = new JCheckBox("Special characters");
generate = new JButton("Generate password");
reset = new JButton("Clear");
textfield = new JTextField(12);
pwLabel = new JLabel("Your new password is: ");
// add widgets to the content pane
Container c = getContentPane();
c.setLayout(new BorderLayout());
centerPanel = new JPanel();
centerPanel.setLayout(new GridLayout(3, 2));
centerPanel.add(lettersUpper);
centerPanel.add(lettersLower);
centerPanel.add(numbers);
centerPanel.add(specialChars);
centerPanel.add(generate);
centerPanel.add(reset);
c.add(centerPanel, BorderLayout.CENTER);
northPanel = new JPanel();
northPanel.setLayout(new FlowLayout());
northPanel.add(numCharLabel);
northPanel.add(numchars);
c.add(northPanel, BorderLayout.NORTH);
southPanel = new JPanel();
southPanel.setLayout(new FlowLayout());
southPanel.add(pwLabel);
southPanel.add(textfield);
c.add(southPanel, BorderLayout.SOUTH);
} // end init
public void start()
// connect event handlers to the widgets
numchars.addItemListener(new ItemListener() {
     public void itemStateChanged(ItemEvent e)
     lengthSelected = Integer.parseInt(pwLength[numchars.getSelectedIndex()]);
CheckBoxHandler handler = new CheckBoxHandler();
lettersUpper.addItemListener(handler);
lettersLower.addItemListener(handler);
numbers.addItemListener(handler);
specialChars.addItemListener(handler);
generate.addActionListener(new ActionListener() {
     public void actionPerformed(ActionEvent e)
     setAsciiRange();
     trimAsciiRange();
reset.addActionListener(new ActionListener() {
     public void actionPerformed(ActionEvent e)
     textfield.setText("");
} // end start
public void setAsciiRange()
int numRange[] = new int[10];
int uppercaseRange[] = new int[26];
int lowercaseRange[] = new int[26];
int specialcharRange[] = new int[32];
System.out.println("Welcome to setAsciiRange!");
if (!wantSpecialchars && !wantNumbers && !wantUppercase && !wantLowercase)
JOptionPane.showMessageDialog(this, "You must make a selection", "Error", JOptionPane.ERROR_MESSAGE);
if (wantNumbers)
for (int i=0, j=48; i<numRange.length; i++, j++)
     numRange[i] = j;
System.out.println("Number " + i + " is " + j +"\n");
} // end for
} // end if
if (wantUppercase)
for (int i=0, j=65; i<uppercaseRange.length; i++, j++)
     uppercaseRange[i] = j;
     System.out.println("Uppercase letter " + i + " is " + j + "\n");
} // end for
} // end if
if (wantLowercase)
for (int i=0, j=97; i<lowercaseRange.length; i++, j++)
     lowercaseRange[i] = j;
System.out.println("Lowercase letter " + i + " is " + j + "\n");
} // end for
} // end if
if (wantSpecialchars)
for (int i=0, j=33; i<15; i++, j++)
specialcharRange[i] = j;
     System.out.println("Special char " + i + " is " + j + "\n");
for (int i=15, j=58; i<22; i++, j++)
specialcharRange[i] = j;
System.out.println("Special char " + i + " is " + j + "\n");
for (int i=22, j=91; i<28; i++, j++)
     specialcharRange[i] = j;
     System.out.println("Special char " + i + " is " + j + "\n");
for (int i=28, j=123; i<specialcharRange.length; i++, j++)
     specialcharRange[i] = j;
     System.out.println("Special char " + i + " is " + j + "\n");
} // end if
if (numRange != null)
System.arraycopy(numRange, 0, asciiRange, 0, numRange.length);
if (uppercaseRange != null)
System.arraycopy(uppercaseRange, 0, asciiRange, firstEmptyElement(), uppercaseRange.length);
if (lowercaseRange != null)
System.arraycopy(lowercaseRange, 0, asciiRange, firstEmptyElement(), lowercaseRange.length);
if (specialcharRange != null)
System.arraycopy(specialcharRange, 0, asciiRange, firstEmptyElement(), specialcharRange.length);
for (int i=0; i<asciiRange.length; i++)
System.out.println(asciiRange[i]);
private int firstEmptyElement()
int i;
for (i=0; i<asciiRange.length; i++)
if (asciiRange[i] == 0)
     break;
return i;
private void trimAsciiRange()
newAsciiRange = new int[firstEmptyElement()];
for (int i=0; i<newAsciiRange.length; i++)
newAsciiRange[i] = asciiRange[i];
System.out.println("newAsciiRange element " + i + " is " + newAsciiRange[i]);
public void generatePw (int selectedLength)
int randomNum;
char pwChar;
pw = "";
for (int i=0; i<=lengthSelected; i++)
randomNum = 1 + (int) (Math.random() * newAsciiRange.length);
try {
     pwChar = new Character((char) (newAsciiRange[i]));
     pw += pwChar;
     System.out.print(pwChar + " ");
catch(ArrayIndexOutOfBoundsException e) {
     System.out.print("Setting out-of-bounds index to 0");
     pwChar = new Character((char) (newAsciiRange[0]));
     pw += pwChar;
     System.out.print(pwChar + " ");
System.out.println(pw);
textfield.setText(pw);
private class CheckBoxHandler implements ItemListener
public void itemStateChanged(ItemEvent e)
if (e.getSource() == specialChars)
     if (e.getStateChange() == ItemEvent.SELECTED)
     wantSpecialchars = true;
     else
     wantSpecialchars = false;
} // end outer if
if (e.getSource() == numbers)
     if (e.getStateChange() == ItemEvent.SELECTED)
     wantNumbers = true;
     } // end if
     else
     wantNumbers = false;
     } // end else
} // end if
if (e.getSource() == lettersUpper)
     if (e.getStateChange() == ItemEvent.SELECTED)
     wantUppercase = true;
     else
     wantUppercase = false;
} // end if
if (e.getSource() == lettersLower)
     if (e.getStateChange() == ItemEvent.SELECTED)
     wantLowercase = true;
     else
     wantLowercase = false;
} // end if

I'm sorry to have to post my entire program, Ok - but next time please use code tags (even though it makes it easier this time, it makes it so much easier to read)
but I
keep getting an error msg that points to a variable
that is NOWHERE in my code. Does your editor have a "find" function? In Notepad it's CTL-F
The var is called
PwChar. no, it's called pwChar
It's mentioned in the error msg, but is
nowhere in my code. This is even after saving and
recompiling it THREE TIMES. Please, someone, tell me
where this error appears in my code, if you even can.
Your help will be greatly appreciated. Here is the
e error msg:
C:\jdk1.2.1\bin>javac PwGenerator.java
PwGenerator.java:228: Incompatible type for =. Can't
convert java.lang.Character
to char.
pwChar = new Character((char)
r((char) (newAsciiRange));
^
PwGenerator.java:234: Incompatible type for =. Can't
convert java.lang.Character
to char.
pwChar = new Character((char)
r((char) (newAsciiRange[0]));
^
2 errors
Now here is my code (sorry for the length):
// My Javafied Password Generator
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.util.*;
public class PwGenerator extends JApplet
private String pw;
private JPanel centerPanel, northPanel,
l, southPanel;
private JComboBox numchars;
private JCheckBox lettersUpper, lettersLower,
r, numbers, specialChars;
private JButton generate, reset;
private JTextField textfield;
private int asciiRange[], newAsciiRange[];
private String pwLength[] = {"6", "7", "8", "9",
", "10", "11", "12"};
private int lengthSelected;
private JLabel pwLabel, numCharLabel;
private boolean wantSpecialchars, wantNumbers,
s, wantUppercase, wantLowercase;
public void init()
// instantiate widgets
asciiRange = new int[94];
numCharLabel = new JLabel("Number of characters
ters for password");
numchars = new JComboBox(pwLength);
lettersUpper = new JCheckBox("Uppercase
case letters");
lettersLower = new JCheckBox("Lowercase
case letters");
numbers = new JCheckBox("Numbers");
specialChars = new JCheckBox("Special
cial characters");
generate = new JButton("Generate password");
reset = new JButton("Clear");
textfield = new JTextField(12);
pwLabel = new JLabel("Your new password is: ");
// add widgets to the content pane
Container c = getContentPane();
c.setLayout(new BorderLayout());
centerPanel = new JPanel();
centerPanel.setLayout(new GridLayout(3, 2));
centerPanel.add(lettersUpper);
centerPanel.add(lettersLower);
centerPanel.add(numbers);
centerPanel.add(specialChars);
centerPanel.add(generate);
centerPanel.add(reset);
c.add(centerPanel, BorderLayout.CENTER);
northPanel = new JPanel();
northPanel.setLayout(new FlowLayout());
northPanel.add(numCharLabel);
northPanel.add(numchars);
c.add(northPanel, BorderLayout.NORTH);
southPanel = new JPanel();
southPanel.setLayout(new FlowLayout());
southPanel.add(pwLabel);
southPanel.add(textfield);
c.add(southPanel, BorderLayout.SOUTH);
} // end init
public void start()
// connect event handlers to the widgets
numchars.addItemListener(new ItemListener() {
     public void itemStateChanged(ItemEvent e)
lengthSelected =
d =
Integer.parseInt(pwLength[numchars.getSelectedIndex()]
CheckBoxHandler handler = new CheckBoxHandler();
lettersUpper.addItemListener(handler);
lettersLower.addItemListener(handler);
numbers.addItemListener(handler);
specialChars.addItemListener(handler);
generate.addActionListener(new ActionListener()
er() {
     public void actionPerformed(ActionEvent e)
     setAsciiRange();
     trimAsciiRange();
reset.addActionListener(new ActionListener() {
     public void actionPerformed(ActionEvent e)
     textfield.setText("");
} // end start
public void setAsciiRange()
int numRange[] = new int[10];
int uppercaseRange[] = new int[26];
int lowercaseRange[] = new int[26];
int specialcharRange[] = new int[32];
System.out.println("Welcome to setAsciiRange!");
if (!wantSpecialchars && !wantNumbers &&
s && !wantUppercase && !wantLowercase)
JOptionPane.showMessageDialog(this, "You must
u must make a selection", "Error",
JOptionPane.ERROR_MESSAGE);
if (wantNumbers)
for (int i=0, j=48; i<numRange.length; i++,
; i++, j++)
     numRange[i] = j;
System.out.println("Number " + i + " is " + j
is " + j +"\n");
} // end for
} // end if
if (wantUppercase)
for (int i=0, j=65; i<uppercaseRange.length;
ength; i++, j++)
     uppercaseRange[i] = j;
System.out.println("Uppercase letter " + i + " is "
" + j + "\n");
} // end for
} // end if
if (wantLowercase)
for (int i=0, j=97; i<lowercaseRange.length;
ength; i++, j++)
     lowercaseRange[i] = j;
System.out.println("Lowercase letter " + i +
" + i + " is " + j + "\n");
} // end for
} // end if
if (wantSpecialchars)
for (int i=0, j=33; i<15; i++, j++)
specialcharRange[i] = j;
System.out.println("Special char " + i + " is " + j
j + "\n");
for (int i=15, j=58; i<22; i++, j++)
specialcharRange[i] = j;
System.out.println("Special char " + i + " is
i + " is " + j + "\n");
for (int i=22, j=91; i<28; i++, j++)
     specialcharRange[i] = j;
System.out.println("Special char " + i + " is " + j
j + "\n");
for (int i=28, j=123;
j=123; i<specialcharRange.length; i++, j++)
     specialcharRange[i] = j;
System.out.println("Special char " + i + " is " + j
j + "\n");
} // end if
if (numRange != null)
System.arraycopy(numRange, 0, asciiRange, 0,
ge, 0, numRange.length);
if (uppercaseRange != null)
System.arraycopy(uppercaseRange, 0, asciiRange,
Range, firstEmptyElement(), uppercaseRange.length);
if (lowercaseRange != null)
System.arraycopy(lowercaseRange, 0, asciiRange,
Range, firstEmptyElement(), lowercaseRange.length);
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System.arraycopy(specialcharRange, 0,
ge, 0, asciiRange, firstEmptyElement(),
specialcharRange.length);
for (int i=0; i<asciiRange.length; i++)
System.out.println(asciiRange[i]);
private int firstEmptyElement()
int i;
for (i=0; i<asciiRange.length; i++)
if (asciiRange[i] == 0)
     break;
return i;
private void trimAsciiRange()
newAsciiRange = new int[firstEmptyElement()];
for (int i=0; i<newAsciiRange.length; i++)
newAsciiRange[i] = asciiRange[i];
System.out.println("newAsciiRange element " + i
" + i + " is " + newAsciiRange[i]);
public void generatePw (int selectedLength)
int randomNum;
char pwChar;
pw = "";
for (int i=0; i<=lengthSelected; i++)
randomNum = 1 + (int) (Math.random() *
om() * newAsciiRange.length);
try {
     pwChar = new Character((char) (newAsciiRange));
     [b]pw += pwChar;
     System.out.print(pwChar + " ");
catch(ArrayIndexOutOfBoundsException e) {
System.out.print("Setting out-of-bounds index to
o 0");
     pwChar = new Character((char) (newAsciiRange[0]));
     pw += pwChar;
     System.out.print(pwChar + " ");
System.out.println(pw);
textfield.setText(pw);
private class CheckBoxHandler implements
ts ItemListener
public void itemStateChanged(ItemEvent e)
if (e.getSource() == specialChars)
     if (e.getStateChange() == ItemEvent.SELECTED)
     wantSpecialchars = true;
     else
     wantSpecialchars = false;
} // end outer if
if (e.getSource() == numbers)
     if (e.getStateChange() == ItemEvent.SELECTED)
     wantNumbers = true;
     } // end if
     else
     wantNumbers = false;
     } // end else
} // end if
if (e.getSource() == lettersUpper)
     if (e.getStateChange() == ItemEvent.SELECTED)
     wantUppercase = true;
     else
     wantUppercase = false;
} // end if
if (e.getSource() == lettersLower)
     if (e.getStateChange() == ItemEvent.SELECTED)
     wantLowercase = true;
     else
     wantLowercase = false;
} // end if

"Error running javac.exe compiler" when using ant to compile Eclipse plugin

Hi
I encounter an error "Error running C:\jdk1.5.0_06\bin\javac.exe compiler" when building my project using ant1.7.
My project has 10 eclipse plugins, and each plugin is compiled by invoking following ant target

<target name="compilePlugin">
     
     
     <delete dir="${param.plugin.dir}/${build.dir}" quiet="true"/>
     
     <delete file="${param.plugin.dir}/${param.plugin.targetJarFile}" quiet="true"/>
     <mkdir dir="${param.plugin.dir}/${build.dir}"/>
     
     <javac      srcdir="${param.plugin.dir}/${param.plugin.src.dir}"
               destdir="${param.plugin.dir}/${build.dir}"
               failonerror="${javacFailOnError}"
               verbose="${javacVerbose}"
               debug="${javacDebugInfo}"
               deprecation="${javacDeprecation}"
          optimize="${javacOptimize}"
               source="${javacSource}"
               target="${javacTarget}"
               fork="${param.fork}" memoryInitialSize="256m" memoryMaximumSize="512m">
          <classpath refid="compile.classpath" />
     </javac>
     
     <copy todir="${param.plugin.dir}/${build.dir}" failonerror="true">
          <fileset dir="${param.plugin.dir}/${param.plugin.src.dir}" excludes="**/*.java, **/package.htm*" />
     </copy>
     <jar jarfile="${param.plugin.dir}/${param.plugin.targetJarFile}" basedir="${param.plugin.dir}/${build.dir}"/>
     <delete dir="${param.plugin.dir}/${build.dir}" quiet="true"/>
</target>
Since each of first 9 plugins contains less than 500 java source files, we always set "param.fork" to false when invoking this ant target.
For the 10th plugin, it has about 1000 source files. If we set "param.fork" to false, we will get the error "Error running javac.exe compiler". So we have to set "param.fork" to true when compiling it. This week, this plugin contains about 1250 files and we get the same error again when compiling it. I tried to increase the "memoryMaximumSize" to "768", but still couldn't get through it.
BTW, There are about 150 jar files in our classpath for compiling plugins. Do many jar files cause this problem?
Any help is highly appreciated.
Many thanks
Oceanman

I encountered a very similar error and I was able to resolve it by removing the following parameters from the javac task:
fork="${param.fork}"
memoryInitialSize="256m"
memoryMaximumSize="512m"My values were not the same as yours, before I removed them, the values were set to:
fork="true"
memoryInitialSize="256m"
memoryMaximumSize="256m" Not sure why this fixed my problem but it did. I was using Ant 1.7 and Java 1.6_07 hope this helps.

Execute error..(pervel)

the following is the entire error msg:
C:\jdk1.3.1\bin>java -classpath Jess61a4\jess.jar ExSquare
Exception in thread "main" java.lang.NoClassDefFoundError: ExSquare

Please do not start a new thread when responding. I have posted my response into the original thread in the "Compiling" forum.

Jdk 1.4.0 install error! Please help me!

Flatform : RedHat Linux7.1
Program : j2sdk-1_4_0-linux-i386.bin
I have this error after installing jdk1.4.0 and typing 'javac' :
===========================
Warning: Major version number mismatch.
Warning: Minor version number mismatch.
Warning: Major version number mismatch.
Warning: Minor version number mismatch.
Warning: Major version number mismatch.
Warning: Minor version number mismatch.
Warning: Major version number mismatch.
repeat...
Why this error do occur?
How can I complete jdk1.4 installing?

Try using the full path for javac, e.g., $JAVA_HOME/bin/javac, and if that works then the error is due to another javac (most probably /usr/bin/javac).
For example, if you have RedHat and both Kaffe and J2SE are installed, the /usr/bin/javac is Kaffe's and is ran first because /usr/bin comes first in $PATH.
You just have to remove that other javac or make that a symbolic link to the other one.

Error in put() method

hi
this is my first post here
i have written a program
but when ever i compile the code i get a error message which is posted below
BounceThread.java : cannot resolve symbol: method put(int,java.lang.String)
location: class java.util.HashMap;
scoreMap.put(Ball.COUNTER,ae.getActionCommand()+"-"+Ball.SHAPE_COLOR);
^
Note:BounceThread.java uses or overrides a deprecated API
Note: decomplie with -deprecation for details
*1 error*im using jdk1.4.2, i tried with -Xlint:deprecation and all
pls tell me wat am i doing wrong.
any help will be appreciated

dolphin_m70 wrote:
hi
this is my first post here
i have written a program
but when ever i compile the code i get a error message which is posted below
BounceThread.java : cannot resolve symbol: method put(int,java.lang.String)
location: class java.util.HashMap;
scoreMap.put(Ball.COUNTER,ae.getActionCommand()+"-"+Ball.SHAPE_COLOR);
^
Note:BounceThread.java uses or overrides a deprecated API
Note: decomplie with -deprecation for details
*1 error*im using jdk1.4.2, i tried with -Xlint:deprecation and all
pls tell me wat am i doing wrong.
any help will be appreciatedHashMap has no method named "put" that takes an int and a String.
Did you try reading the documentation ?

Java.lang.UnsatisfiedLinkError: no ocijdbc8

I received the java.lang.UnsatisfiedLinkError: no ocijdbc8 error while running the following command:
java OracleXML putXML -user xxx/xxx .....
I saw a few posts regarding dll files for NT but nothing for AIX.
Any help would be greatly appreciated.
Thanks,
John

Hi Jinyu,
Here are the things I was checking for to fix this error.
I made sure the xsu12.jar and classes12.zip file were in the classpath, and they are.
I made sure the directory that contains the libocijdbc8.so library was in the classpath. It wasn't so I added it.
I added the directory that holds the libocijdbc8.so library to the LD_LIBRARY_PATH env variable.
Thanks,
John

Error: no jmvfw in java.library.path

Hello
Exception in thread "VFW Request Thread" java.lang.UnsatisfiedLinkError: JMFSecurityManager: java.lang.UnsatisfiedLinkError: no jmvfw in java.library.path
     at com.sun.media.JMFSecurityManager.loadLibrary(JMFSecurityManager.java:206)
     at com.sun.media.protocol.vfw.VFWCapture.<clinit>(VFWCapture.java:19)
     at com.sun.media.protocol.vfw.VFWSourceStream.doConnect(VFWSourceStream.java:241)
     at com.sun.media.protocol.vfw.VFWSourceStream.run(VFWSourceStream.java:763)
     at java.lang.Thread.run(Thread.java:595)I get this error when use jdk1.5.0 but I don't have it when use older JDK...
Anyone could know why it happens and how to make it working with JDK1.5.0??
Thx
Bartek

SunForumsGuest wrote:
FYI -- For some reason, on my Win7 x64 machine, if I installed JMF and the option "move dlls to windows/system" directory was checked, those DLLs were never installed on my system.
If you UNCHECK that during install they will show up in the JMF/lib directory.
C:\Program Files (x86)\JMF2.1.1e\lib
Hope it helps. I've been going nuts until I just figured that out.Hello,
thanks for the tip - I followed your instructions and have the dlls. However, when I try running some code, this error occurs:
jmvfw.dll: Can't load IA 32-bit .dll on a AMD 64-bit platform
I cannot find dll's compiled for 64-bit on the Internet; has anybody else faced this problem?
I use Netbeans under Win7.

The nullptrexception error + code

this program is infact taken from an old forum message.
The code and the error message in mentioned below. Please help me find out the reason for this error.
Thanks a lot.
import javax.swing.*;
import javax.swing.event.*;
import java.io.*;
import javax.media.*;
import javax.media.format.*;
import javax.media.util.*;
import javax.media.control.*;
import javax.media.protocol.*;
import java.util.*;
import java.awt.*;
import java.awt.image.*;
import java.awt.event.*;
import com.sun.image.codec.jpeg.*;
public class SwingCapture extends Panel implements ActionListener {
public static Player player = null;
public CaptureDeviceInfo di = null;
public MediaLocator ml = null;
public JButton capture = null;
public Buffer buf = null;
public Image img = null;
public VideoFormat vf=null;
public BufferToImage btoi = null;
public ImagePanel imgpanel = null;
public SwingCapture() {
setLayout(new BorderLayout());
setSize(320,550);
imgpanel = new ImagePanel();
capture = new JButton("Capture");
capture.addActionListener(this);
String str1 = "vfw:Philips USB PC-Camera:0";
String str2 = "vfw:Microsoft WDM Image Capture (Win32):0";
di = CaptureDeviceManager.getDevice(str1);
ml = di.getLocator();
try {
player = Manager.createRealizedPlayer(ml);
player.start();
Component comp;
if ((comp = player.getVisualComponent()) != null)
add(comp,BorderLayout.NORTH);
add(capture,BorderLayout.CENTER);
add(imgpanel,BorderLayout.SOUTH);
catch (Exception e)
     e.printStackTrace();
public static void main(String[] args) {
Frame f = new Frame("SwingCapture");
SwingCapture cf = new SwingCapture();
f.addWindowListener(new WindowAdapter() {      //overriding windowClosing
public void windowClosing(WindowEvent e) {
playerclose();
System.exit(0); }
f.add("Center",cf);
f.pack();
f.setSize(new Dimension(320,550));
f.setVisible(true);
public static void playerclose() {
player.close();
player.deallocate();
public void actionPerformed(ActionEvent e) {
JComponent c = (JComponent) e.getSource();
if (c == capture) {
// Grab a frame
FrameGrabbingControl fgc = (FrameGrabbingControl) player.getControl("javax.media.control.FrameGrabbingControl");
buf = fgc.grabFrame();
// Convert it to an image
btoi = new BufferToImage((VideoFormat)buf.getFormat());
img = btoi.createImage(buf);
// show the image
imgpanel.setImage(img);
class ImagePanel extends Panel {
public Image myimg = null;
public ImagePanel() {
setLayout(null);
setSize(320,240);
public void setImage(Image img) {
this.myimg = img;
repaint();
public void paint(Graphics g) {
if (myimg != null) {
g.drawImage(myimg, 0, 0, this);
The error message :-
C:\jdk1.4_01\bin>java SwingCapture
Exception in thread "main" java.lang.NullPointerException
at SwingCapture.<init>(SwingCapture.java:38)
at SwingCapture.main(SwingCapture.java:59)
I am not sure that the code when pasted retains the same format. hence i specify the lines in the code where the error is being shown.
line 38
-> try {
player = Manager.createRealizedPlayer(ml);
player.start();
line 59
->public void windowClosing(WindowEvent e) {
playerclose();
System.exit(0); }

I think your line numbers may be off, so you're identifying the wrong lines of code.
Anyway, is it possible that in this line:
di = CaptureDeviceManager.getDevice(str1);getDevice returns null, so that the subsequent line
ml = di.getLocator();would throw the NPE?

No ocijdbc8 Error (RH71,ORA816,JDK1.3)

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