Creating an instance of a class with no default constructor

Hello gurus,
I wrote my own serialization and RMI protocol for both C++ and Java that follows closely what the default Java version does. I'm trying to recreate an object on the Java side that was sent over the wire. The first step is to create an instance of the class. How do I create an instance of a class that has no constructor (i.e. the only instances are static, created by the class itself and returned by static methods) or one that has no default constructor (like Integer)? The Java serialization seems to support it but the reflection API doesn't seem to have any support for this (i.e. Class::newInstance() and Constructor::newInstance()). It seems that through the standard API you can only create an object via one of its constructors. There must be a "hidden" method somewhere that allows the Java serialization to create an object without calling a constructor - where is it?
Dominique

There must be a "hidden" method
somewhere that allows the Java serialization to create
an object without calling a constructor - where is
it?You are correct, the way in which the Serialization creates Objects is "hidden" deep within the runtime.
If it were not hidden, you would be able to find it, and use it to violate the integrity of the VM.

Similar Messages

Create POJO instance in fxml with no default constructor

My question is that how to create POJO instance in fxml that has no default constructor. I am creating pie chart data object in fxml like this
*<fx:define>*
*<PieChart.Data fx:id="data" >*
*<name>java</name>*
*<pieValue>20.2</pieValue>*
*</PieChart.Data>*
*</fx:define>*
since there is no default constructor how to create this object fxml?
Edited by: 988476 on Feb 16, 2013 6:21 AM

There must be a "hidden" method
somewhere that allows the Java serialization to create
an object without calling a constructor - where is
it?You are correct, the way in which the Serialization creates Objects is "hidden" deep within the runtime.
If it were not hidden, you would be able to find it, and use it to violate the integrity of the VM.

Create multiple instances of same class but with unique names

Hi,
I'm creating an IM application in Java.
So far I can click on a user and create a chat session, using my chatWindow class. But this means I can only create one chatWindow class, called 'chat'. How can I get the application to dynamically make new instances of this class with unique names, for examples chatWindowUser1, chatWindowUser2.
Below is some code utlising the Openfire Smack API but hopefully the principle is the clear.
    private void chatButtonActionPerformed(java.awt.event.ActionEvent evt) {
        int selectedUserIndex = rosterList.getSelectedIndex();
        String selectedUser = rostAry[selectedUserIndex].getUser();
        System.out.println("Chat with: " + selectedUser);
        if (chatBox == null) {
            JFrame mainFrame = CommsTestApp.getApplication().getMainFrame();
            chatBox = new CommsTestChatBox(mainFrame,conn,selectedUser);
            chatBox.setLocationRelativeTo(mainFrame);
        CommsTestApp.getApplication().show(chatBox);
}

yes, an array would work fine, just realize that by using an array, you're setting an upper bound on the number of windows you can have open.
As for unique names, if you mean unique variable name, you don't need one. The array index serves to uniquely identify each instance. If you mean unique title for the window, set that however you want (username, index in array, randomly generated string, etc.). It's just a property of the window object.

Create an instance of my class variable

Hello all,
I'm a newbie to iPhone/iPad programming and am having some trouble, I believe the issue is that I'm not creating an instance of my class variable. I've got a class that has a setter and a getter, I know about properties but am using setters and getters for the time being. I've created this class in a View-based application, when I build the program in XCode 3.2.6 everything builds fine. When I step through the code with the debugger there are no errors but the setters are not storing any values and thus the getters are always returning 0 (it's returning an int value). I've produced some of the code involved and I was hoping someone could point out to me where my issue is, and if I'm correct about not instantiating my variable, where I should do that. Thanks so much in advance.
<p>
Selection.h
@interface Selection : NSObject {
int _choice;
//Getters
-(int) Choice;
//Setters
-(void) setChoice:(int) input;
Selection.m
#import "Selection.h"
@implementation Selection
//Getters
-(int)Choice {
return _choice;
//Setter
-(void)setChoice:(int)input{
          _choice = input;
RockPaperScissorsViewController.m
#import "RockPaperScissorsViewController.h"
@implementation RockPaperScissorsViewController
@synthesize rockButton, paperButton, scissorsButton, label;
//@synthesize humanChoice, computerChoice;
-(void)SetLabel:(NSString *)selection{
          label.text = selection;
-(IBAction)rockButtonSelected {
//          [self SetLabel:@"Rock"];
          [humanChoice setChoice:1];
</p>
So in the above code it's the [humanChoice setChoice:1] that is not working. When I step through that portion with the debugger I get no errors but when I call humanChoice.Choice later on in the code I get a zero.
-NifflerX

It worked, thank you so much. I put
humanChoice = [[Selection alloc]init];
In viewDidLoad and it worked like a charm. Thank you again.
-NifflerX

Creating multiple instances of a class in LabVIEW object-oriented programming

How do you create multiple instances of a class in a loop? Or am I thinking about this all wrong?
For instance, I read in a file containing this information:
Person Name #1
Person Age #1
Hobby #1
Hobby #2
Hobby #3
Person Name #2
Person Age #2
Hobby #1
Hobby #2
Hobby #3
Person Name #3
Person Age #3
Hobby #1
Hobby #2
Hobby #3
If I define a Person class with name, age, and an array of strings (for the hobbies), how can I create several new Person instances in a loop while reading through the text file?
FYI, new to LabVIEW OOP but familiar with Java OOP. Thank you!

First of all, let's get your terminology correct. You are not creating multiple instances of a class. You are creating Objects of the class.
Use autoindexing to create an array of your class type.
There are only two ways to tell somebody thanks: Kudos and Marked Solutions
Unofficial Forum Rules and Guidelines

Creating an instance of a class at runtime?

Does anyone know how to create an instance of a class at RunTime? For example, I want to load classes from a JAR file at RunTime, and then create instances of certain classes of each JAR. I ask this because I do not see how to create an instance of one of those classes the traditional way, SomeClass var = new SomeClass(). I am pretty sure that someone out there has done this and succeeded in doing it. All of the post on this stuff only talk about loading the class from a JAR file, but I have already loaded them using URLClassLoader�s findClass() method. I have also created an instance of the class that findClass() returns using newInstance(), but newInstance() returns an object of type Object. How can I convert this object to an object of type SomeClass? You cannot cast it because the compiler will complain due to the import statement issue. So if you cannot include the import statement because that classpath does not exist, then how the heck would you cast the newInstance() object into a SomeClass object?

You can cast the returned object to the type you need...that is what I do in my applet. The trick is that you must get the instance of the applets class loader (or you get a classCastException). Pay attention to this line below - that's the real key here.
"// Get a reference to the applets own classloader"
protected CBaseQuestionnaireFile m_BaseObject = null;// declared up front
m_BaseObject = loadAndRunClass("com.cpm.dataentry.questionnaire.CQuestionnaireFile");// fully qualified base object
Here is the load and run method:
   CBaseQuestionnaireFile loadAndRunClass(String classname)
      com.cpm.common.base.CBaseQuestionnaireFile questBase = null;
      Class cClass = null;
      try
         // first we open the jar file with the classes we need
         String[] aJarList = new String[10];
         // Questionnaire format file
         File fURL1 = new File(GetMainFrame().m_strQuestionnaireFileName);
         URL url1   = new URL(fURL1.toURL(),"");
         URL urlNew = new URL("jar:" + url1.toExternalForm() + "!/" );
         // Server base class directory
         String strServerDirectory = "http://" + GetMainFrame().m_strHost + "/APPLETS/";
         File fURL2 = new File(strServerDirectory);
         URL url2 = new URL(fURL2.toURL(),"");
         URL urlNew2 = new URL("jar:" + url2.toExternalForm() + "!/" );
         // Local base class directory
         String strLocalDirectory = CSystem.GetBasePath() + "/Research/bin/";
         File fURL3 = new File(strLocalDirectory);
         URL url3 = new URL(fURL3.toURL(),"");
         URL urlNew3 = new URL("jar:" + url3.toExternalForm() + "!/" );
         File fURLBase = new File(CSystem.GetBasePath() + "/Research/bin/base.jar");
         URL urlBase = new URL(fURLBase.toURL(),"");
         URL urlNewBase = new URL("jar:" + urlBase.toExternalForm() + "!/" );
         File fURLControl = new File(CSystem.GetBasePath() + "/Research/bin/controls.jar");
         URL urlControl = new URL(fURLControl.toURL(),"");
         URL urlNewControl = new URL("jar:" + urlControl.toExternalForm() + "!/" );
         File fURLUtil = new File(CSystem.GetBasePath() + "/Research/bin/utlities.jar");
         URL urlUtil= new URL(fURLUtil.toURL(),"");
         URL urlNewUtil = new URL("jar:" + urlUtil.toExternalForm() + "!/" );
         // Determine where to look
         URL[] urlList = null;
         if(GetMainFrame().m_isStandalone == false) {
            // From a browser
            CSystem.PrintDebugMessage("Running as an applet");
            if(GetMainFrame().m_bOnLineMode == true) {
               // On line
               CSystem.PrintDebugMessage("*** On Line Mode ***");
               urlList = new URL[2];
               urlList[0] = urlNew;
               urlList[1] = urlNew2;
            else {
               // Off line
               CSystem.PrintDebugMessage("*** Off Line Mode ***");
               urlList = new URL[4];
               urlList[0] = urlNew;
               urlList[1] = urlNewBase;
               urlList[2] = urlNewControl;
               urlList[3] = urlNewUtil;
          else {
             CSystem.PrintDebugMessage("*** Stand Alone Mode ***");
             urlList = new URL[1];
             urlList[0] = urlNew;
CSystem.PrintDebugMessage("Question file/path: " + GetMainFrame().m_strQuestionnaireFileName);
        // Set the wait cursor
        GetMainFrame().SetWaitCursor();
        // Get a reference to the applets own classloader
        Class myClass = getClass();
        ClassLoader appletClassLoader = myClass.getClassLoader();
        // Call our multi-jar class loader
        JarClassLoader jarLoader = new JarClassLoader(urlList,appletClassLoader);
CSystem.PrintDebugMessage("CPM Test - passed Jar Loader" + jarLoader.toString());
         // Load the classname from the jarfile
         try
              cClass = jarLoader.loadClass(classname);
         catch(ClassNotFoundException cnfe)
            Object[] optionsConfirm = { "Ok" };
            JOptionPane.showOptionDialog(GetMainFrame(),"Questionnaire file is either damaged or has been tampered with.", "Questionnaire File Error",
            JOptionPane.DEFAULT_OPTION, JOptionPane.WARNING_MESSAGE, null, optionsConfirm, optionsConfirm[0]);
            GetMainFrame().m_strQuestionnaireFileName = "";
            // Clear the wait cursor
            GetMainFrame().ClearWaitCursor();
            return null;
         Class cSuperclass = cClass.getSuperclass();
CSystem.PrintDebugMessage("Test Superclass type is: " + cSuperclass.toString());
         Object o = cClass.newInstance();
CSystem.PrintDebugMessage("Test plain class type is: " + o.toString());
         // Never remove this line of code
         // without it, a crafty user could use our load routine
         // to load/and run some nasty code
         // This test makes SURE that *ONLY* questionnaires get opened
         // and their methods get called
         if(o instanceof com.cpm.common.base.CBaseQuestionnaireFile)
            // Create the object
CSystem.PrintDebugMessage("Test Is instance of CBaseQuestionnaireFile");
CSystem.PrintDebugMessage("CPM Test - Casting to Base Class");
            questBase = (com.cpm.common.base.CBaseQuestionnaireFile)o;
CSystem.PrintDebugMessage("CPM Test - Getting languages from questionnaire");
            GetMainFrame().GetLanguagesFromQuestionnaire(questBase);
CSystem.PrintDebugMessage("CPM Test - Setting locale from Questionnaire selection");
            questBase.SetQuestionnaireLocale(GetMainFrame().m_locale);
CSystem.PrintDebugMessage("CPM Test - Initializing Questionnaire");
            questBase.Initialize();
            questBase.InitializeCards();
          else
            Object[] optionsConfirm = { "Ok" };
            JOptionPane.showOptionDialog(GetMainFrame(),"Questionnaire file is either damaged or has been tampered with.", "Questionnaire File Error",
            JOptionPane.DEFAULT_OPTION, JOptionPane.WARNING_MESSAGE, null, optionsConfirm, optionsConfirm[0]);
            GetMainFrame().m_strQuestionnaireFileName = "";
            // Clear the wait cursor
            GetMainFrame().ClearWaitCursor();
            return null;
      catch (Exception e)
          exDialog.showForThrowable(e.toString(),e);
     // Clear the wait cursor
     GetMainFrame().ClearWaitCursor();
     // Set MouseListener Pointer
//     questBase.SetMouseListenerPointer(GetMainFrame().m_mouseListener);
     return questBase;
   }

Create an instance of a class from class name

Hi,
I have the class name as a String variable. I need to create an instance from this class. How to do it in Java?
Thanks and regards, Marina

Hello
see
[http://java.sun.com/j2se/1.4.2/docs/api/java/lang/Class.html#forName(java.lang.String)]
and
[http://java.sun.com/j2se/1.4.2/docs/api/java/lang/Class.html#newInstance()]
for Classes with paramterless constructor
or
[http://java.sun.com/j2se/1.4.2/docs/api/java/lang/reflect/Constructor.html#newInstance(java.lang.Object[])]
for Constructor with parameters
regards franz

How to create an instance of a class which is stored in a String?

I've class name stored in a String Object.
now i've to create an instance of that class name.
How?

This is very dangerous ground because you give up compile-time safety, but you can get a Class object using Class.forName(String). Then you can use methods of the class Class to operate on it (including creating an instance).

How to create an instance of a class?

how do you create sn instance of a class, and how do you call a method from another class?

You may need to read thru the information provided on this page to understand how to create objects: http://java.sun.com/docs/books/tutorial/java/data/objectcreation.html
I'd also suggest you read the tutorial available at: http://java.sun.com/docs/books/tutorial/java/index.html
Regarding how you call a method belonging to another class you could do it in the foll. ways depending on whether the method is static or not - a static method may be called using the class name followed by a dot and the static method name while a non-static method would require you to create an instance of the class and then use that instance name followed by a dot and the method name. All said and done i'd still suggest you read thru the complete Java programming tutorial to get a good grounding on all these concepts and fundamentals of the language if you are looking to master the technology.
Thanks
John Morrison

Anonymous classes and non-default constructors

I've got a class with only one constructor and that takes an argument. In another class, I want to have an anonymous class that extends this class with something like:
new MyClassWithoutDefaultConstructor(myConstuctorArg) {...}
However, I get a "The constructor MyClassWithoutDefaultConstructor() is undefined".
As a workaround I can create a local class (not anonymous) that extends MyClassWithoutDefaultConstructor and then includes a default constructor which passes my arg to the super constructor. But this is rather messy.
Am I missing something?

The following works fine for me (prints 5):
public abstract class Test
    private final int parameter;
    public Test(int parameter)
        this.parameter=parameter;
    public int getParameter()
        return parameter;
    public abstract int getSomething();
    public static void main(String[] args)
        Test test=new Test(3)
            public int getSomething()
                return getParameter()+2;
        System.out.println(test.getSomething());
}You say your anonymous class is in a different class to the one it extends - what is the access modifier on the constuctor you are calling in the base class? Is the constructor visible from the class containing the anonymous class? Can you post a concise example that produces the compiler error that you are getting?

How to create the instance of a class and to use this object remotely

I have to change a standalone program to do it working on a local net.
the program is prepared for this adjustment, because the only problem for this change came from the use of the database; and, in the application, all the accesses to the database come from only a class that supplies a connection to the database.
In this way I think that I could have (in a local net) a "server application" that has the database embedded inside it.
Furthermore, some client applications (running in different computers of the net) could get access to the database through the connection that comes from an instance of the class that, in the "server application", is made to provide the connection to the database.
I think this could be a good idea...
But I don't have practice with distributed applications and I would ask some suggestion about the way to realize my modification.
(in particular how to get and use, in the "client applications", the instance of the class that give the connection to the database from the "server application").
I would have some help..
thank in advance
regards
tonyMrsangelo.

tonyMrsangelo wrote:
I have to change a standalone program to do it working on a local net.
the program is prepared for this adjustment, because the only problem for this change came from the use of the database; and, in the application, all the accesses to the database come from only a class that supplies a connection to the database.
In this way I think that I could have (in a local net) a "server application" that has the database embedded inside it.
Furthermore, some client applications (running in different computers of the net) could get access to the database through the connection that comes from an instance of the class that, in the "server application", is made to provide the connection to the database.
I think this could be a good idea... Which is why JEE and implementations of that exist.
But I don't have practice with distributed applications and I would ask some suggestion about the way to realize my modification.
(in particular how to get and use, in the "client applications", the instance of the class that give the connection to the database from the "server application").
You can't pass a connection from a server to a client. Nothing will do that.
As suggested you can create a simple RMI server/client set up. Or use a more feature rich (and much more complex) JEE container.
RMI is simple enough for its own tutorial
[http://java.sun.com/docs/books/tutorial/rmi/index.html]
JEE (previously called J2EE) is much more complex and requires books. You can get a brief overlook from the following
[http://java.sun.com/javaee/]

Creating different instances of one class

Hi everyone thanks so much for all the help so far! I want to create a new instance of class coauthorship everytime the loop goes around to a new record! However thats not whats happening it only creates 1 instance of coauthorship and it is overwritten with every loop here is Class Coauthorship
public class Coauthorship {
    private String name, coauthor, title;
    private List titles;
    /** Creates a new instance of Coauthorship */
    public Coauthorship(String name1, String name2, String TITLE){
        name = name1;
        coauthor = name2;
        title = TITLE;
        //List titles = Collections.synchronizedList(new ArrayList(alltitles));
    public String getauthor(){
        return name;
    public void settitle(String TITLE){
        title = TITLE;
    public void setname(String name1){
        name = name1;
   public void setcoauthor( String name2){
        coauthor = name2;
// public void addTitle(String TITLE){
    //    if(TITLE != null)
    //    titles.add(TITLE);
    public String getcoauthor(){
        return coauthor;
       public String gettitle(){
        return title;
       public int getTitleCount(){
           return titles.size();
         public void printcoauthors(String currentauthor){
         //Extractdata ed = new Extractdata();
        // Coauthorship c = new Coauthorship(ed.getname1(), ed.getname2(), ed.getTITLE());
         if(currentauthor.equals(getauthor()))
             System.out.println(getcoauthor());
         else if (currentauthor.equals(getcoauthor()))
             System.out.println(getauthor());
         System.out.println(gettitle());
         System.out.println("Hello is this thing on?");
}and here is where the values are coming from in Class Extractdata
//Checks if the document was cowritten
                if(authors.getLength() > 0)
                            for(int z = 0; z < authors.getLength(); z++){
                           //Begin with the second author so not to include the author in the list of coauthors
                                    for(int w = 1; w < authors.getLength(); w++){
                                        Coauthorship coauthorship = null;
                                        //Ensures that the author is not counted as a co-author
                                        if(z != w){
                                            name1 = names[z];
                                            name2 = names[w];
                                            Coauthorship c = new Coauthorship(name1, name2, TITLE);
                                            c.setname(name1);
                                            c.setcoauthor(name2);
                                            c.settitle(TITLE);
                            }Thanks so much for everyones help so far

One thing to remember is that when you write:
Coauthorship c = new Coauthorship(name1, name2, TITLE);
Coauthorship c is creating a reference variable that points to an object that is of class type Coauthorship. It is NOT the object itself. It only points to the object in question.
It is the new Coauthorship(...) that actually creats the object in memory. So each time through the loop you are asking for a new Coauthoriship object and a new reference to that new object. Of course, Java (meaning the JVM) may (or always will - not sure here) re-use the reference variable at the same memory location. You loose the reference to each object create in the previous loop iteration leaving you with a reference pointing to the last object created in the loop when the loop ends.
If you could state in plain English what your goal is, that would help. From your code, I can tell that the goal (or problem domain) is not clear. Or at least, how to achieve that goal is not clear. State the requirements using ergular words (not psuedo code or such) that would help get things a little clearer.

Creating an instance of a class from within another class

I am trying to create an instance of MCQ in the T class but I am getting this error:
File: E:\JAVA PROGRAMS\assignment 1\T.java [line: 15]
Error: cannot find symbol
symbol : class MCQ
location: class T
here are the two classes:
// class T
import java.awt.*;
import java.util.*;
import java.lang.*;
public class T{
public T(String aT)
pest = aT;
public static T t_one()
T aT = new T("Calculator");
aT.addQ(new MCQ( " 2 + 2", "equals 4", "equals 5", "equals 0", " equals -2",
"is a prime number", 1));
return aT;
private String pest;
//class Q
import java.awt.*;
import java.util.*;
import java.lang.*;
public abstract class Q{
Vector q = new Vector();
public String aT;
abstract void addQ(Q aQ);
public class MCQ extends Q{
String a,b,c,d,e,f,g;
int answer;
public MCQ (String a, String b, String c, String d, String e, int answer)
this.a = a;
this.b = b;
this.c = c;
this.d = d;
this.e = e;
this.answer = answer;
void addQ(Q aQ)
q.addElement(new T(aT));
I tried to make reference to MCQ by doing this in class T:
MCC qT = new MCQ() ;
but that presents a whole other set of problems.
please help I think I have tried everything!

Use code tags (http://forum.java.sun.com/help.jspa?sec=formatting)
Don't import java.lang.* . You get those automatically.
Your MCQ class is really Q.MCQ (the way you posted, anyway).
If Q weren't abstract, you could do:
new Q().new MCQ(...)But, you can't create a Q without defining 'add'. You could do it anonymously, but that makes no sense. Put Q and MCQ in separate files and try again.

How to call a instance method without creating the instance of a class

class ...EXCH_PRD_VERT_NN_MODEL definition
public section.
methods CONSTRUCTOR
    importing
      value(I_ALV_RECORDS) type ..../EXCH_VBEL_TT_ALV
      value(I_HEADER) type EDIDC .
methods QUERY
    importing
      I_IDEX type FLAG
      i_..........
    returning
      value(R_RESULTS) type .../EXCH_VBEL_TT_ALV .
Both methods are instance methods.
But in my program i cannot created instance of the class unless i get the results from Query.
I proposed that Query must be static, and once we get results we can create object of the class by pasing the result table which we get from method query.
But i must not change the method Query to a static method.
Is there any way out other than making method Query as static ?
Regards.

You can't execute any instance method without creating instance of the class.
In your scenario, if you don't want to process your method of your class, you can check the instance has been created or not.
Like:
IF IT_QUERY IS NOT INITIAL.
CRATE OBJECT O_QUERY EXPORTING......
ENDIF.
IF O_QUERY IS NOT INITIAL.
CALL METHOD O_QUERY->QUERY EXPORTING....
ENDIF.
Regards,
Naimesh Patel

Unable to create ASM instance in Sol 10 with oracle 10g

Hi
I am trying to create ASM instance in oracle 10g, getting an error will try to add localconfig add command
"bash-3.00# /export/home/oracle/oracle/product/10.2.0/db_1/bin/localconfig add reset
Failure at scls_scr_create with code 1
Internal Error Information:
Category: 1234
Operation: scls_scr_create
Location: mkdir
Other: Unable to make user dir
Dep: 2
Successfully accumulated necessary OCR keys.
Creating OCR keys for user 'root', privgrp 'root'..
Operation successful.
Configuration for local CSS has been initialized
Adding to inittab
/etc/init.d/init.cssd: /var/opt/oracle/scls_scr/Sun/root/cssrun: cannot create
Startup will be queued to init within 30 seconds.
Checking the status of new Oracle init process...
Expecting the CRS daemons to be up within 600 seconds.
Giving up: Oracle CSS stack appears NOT to be running.
Oracle CSS service would not start as installed
Automatic Storage Management(ASM) cannot be used until Oracle CSS service is started "
initcssd has been installed and unable to start also getting an error
# svcs -x svc:/system/initcssd:default
svc:/system/initcssd:default (system activity reporting package)
State: maintenance since Wed Nov 16 10:39:29 2011
Reason: Start method failed repeatedly, last exited with status 2.
See: http://sun.com/msg/SMF-8000-KS
See: sar(1M)
See: /var/svc/log/system-initcssd:default.log
Impact: This service is not running.
Can some please help me to create this instance, alos need a initcssd.zip file for 10g

Hi thanks,
I have passed more steps, CSS is started after changing the hostname, after that I created two drive and mounted properly
when I try to create a ASM disk its failing with following error and idea
SQL> CREATE DISKGROUP DB_DATA NORMAL REDUNDANCY
2 FAILGROUP controller1 DISK '/dev/dsk/c0d1s0'
3 FAILGROUP controller2 DISK '/dev/dsk/c1d1s0';
CREATE DISKGROUP DB_DATA NORMAL REDUNDANCY
ERROR at line 1:
ORA-15018: diskgroup cannot be created
ORA-15031: disk specification '/dev/dsk/c1d1s0' matches no disks
ORA-15025: could not open disk '/dev/dsk/c1d1s0'
ORA-15056: additional error message
Intel SVR4 UNIX Error: 13: Permission denied
Additional information: 42
Additional information: 134497888
Additional information: -809278080
ORA-15031: disk specification '/dev/dsk/c0d1s0' matches no disks
ORA-15025: could not open disk '/dev/dsk/c0d1s0'
ORA-27037: unable to obtain file status
Intel SVR4 UNIX Error: 25: Inappropriate ioctl for device
Additional information: 16
Additional information: 134497888
Additional information: -809278080

Creating an instance of a class with no default constructor

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