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Null Pointer Exception in Java Application – Need Fixing 1 Month Ago by YashSmith … class Test { public static void main(String[] args) { String text = null; System.out.println(text.length()); // NullPointerException here } } How can I… Re: Hello Everyone, I'm Ray Brad 1 Month Ago by Dani … not a function" and "Cannot read properties of null (reading 'includes').) Sorry, I just saw this now. Please [start… Re: What’s Best Way to Clear File Contents Without Deleting the File in Linux 1 Month Ago by Reverend Jim I'm confused. Since the log file is recreated automatically what is the problem with just deleting it? But if you want to shorten it you could always open it as write (but not append) and write a null string to it. null pointer exception in jdbc 12 Years Ago by shibu111 null pointer exception in jdbc how to over come this problem why this null pointer exception is comming in jdbc....... Re: NULL and nullptr and strstr etc 12 Years Ago by deceptikon … error every time you used `NULL` because there's no implicit conversion from `void*`. `NULL` would be completely useless in …that case, so C++'s `NULL` fits the C++ version of… a null pointer constant rather than the C version… Re: 'null' is null or not an object 16 Years Ago by ~s.o.s~ > Null also compares to undefined: ( undefined == null ) is always true. ...which is often misleading as they stand for two different things and have different types. A better way in almost all cases would be to use the strict comparison operator to get an accurate, type safe result. Re: NULL and nullptr and strstr etc 12 Years Ago by rubberman NULL is defined in <stdio.h> as `(void*)0`. This can cause problems with some C++ code. With current C/C++ compilers, you are safe to use a simple 0 for null values. IE: void* vptr = 0; // ok int* iptr = 0; // ok double* dptr = NULL; // not ok, depending upon compiler Re: 'null' is null or not an object 17 Years Ago by stymiee Null means it is nothing. It has no value or state of any kind. Re: "Null" Word in csv export 10 Years Ago by jwenting NULL is a real value in SQL, hence it gets exported as a real value. If you want it replaced with something else, adjust the method that writes the output to do the replacement... Re: NULL 12 Years Ago by JamesCherrill … variable refers to String class,having initialised with null string..so its value is null.. > > You can also define… like Strinf s1 = NULL; //It's also java's reserved keyword.. Wrong, wrong, wrong.…that object, it is NOT null. Java is case sensitive, NULL is not the same as null null is not a Java reserved … Re: NULL 12 Years Ago by jalpesh_007 Also you can define null value with String s =""; //declares a variable refers to String class,having initialised with null string..so its value is null.. You can also define like Strinf s1 = NULL; //It's also java's reserved keyword.. Re: NULL 12 Years Ago by JamesCherrill … variables and expressions that refer to objects or arrays. "null" is the special value for those variables or expressions…, but it has not been initialised, so its value is null NULL 12 Years Ago by nazmule27 What is NULL? Please answer if know it exactly in java Perspective. Re: NULL 12 Years Ago by simrankim Which Null you are looking for, in Java, in Sql, in C++. Null pointer on building a binary tree 17 Years Ago by jmasta … link; //The constructor method public Node() { this.left = null; this.right = null; this.link = null; } public Node(char value, int count) { this.value… = value; this.count = count; this.right= null; this.left = null; this.link = null; } // The set methods public void setLink(Node p… Null List with an array 13 Years Ago by fonzi … ipad Hello windows soap ipad Hello windows soap null null null null null ............ This eventually stops and wont let the …// this remove the item from the list objects[index] = null; return true;//returns true } } return false; } @Override… null pointer assignment 15 Years Ago by rajdey1 …; list *head; public: integer() {head=NULL; p=NULL; } ~integer() {list *tmp=head; while(tmp!=NULL) {tmp=tmp->next; delete(tmp->…->previous=tmp; tmp=tmp->next; tmp->next=NULL; tmp->data=*k - 48; k++; } } return i; }… Re: null pointer assignment 15 Years Ago by Salem … list *head; public: integer() { head=NULL; p=NULL; } ~integer() { list *tmp=head; while(tmp!=NULL) { tmp=tmp->next; delete(tmp-&… k++; } else { tmp->next=new(list); if(tmp==NULL) { cout<<"No Memory For Allocation"<… Re: null pointer assignment 15 Years Ago by rajdey1 … list *head; public: integer() { head=NULL; p=NULL; } ~integer() { list *tmp=head; while(tmp!=NULL) { tmp=tmp->next; delete(tmp-&… k++; } else { tmp->next=new(list); if(tmp==NULL) { cout<<"No Memory For Allocation"<… Re: Null List with an array 13 Years Ago by fonzi …soap ipad Hello windows soap null null null null null ............ to this true Tomatoes Lettuce Milk Hello ipad Hello windows soap null null null null null ............ so i have … union method [CODE] for(Object objects1 = baggie2.getFirst(); objects !=null; objects1 = baggie2.getFirst()){ //if baggie1 and baggie2 have same then… Null Pointer Exception??? 14 Years Ago by coolbeanbob …// // }//end else if // // else JOptionPane.showMessageDialog(null, "Error!"); } public void readFile(){ BufferedReader readBuffer…p = 0; while((strRead = readBuffer.readLine())!=null){ System.out.println("readFile first step … Re: Null Pointer Exception??? 14 Years Ago by coolbeanbob … update method to display blank form // } // else // JOptionPane.showMessageDialog(null, "This is the first record"); //display message to… to next record // updateScreen(); // }//end if // else JOptionPane.showMessageDialog(null, "This is the last record!"); //else display message… Re: Null Pointer Exception??? 14 Years Ago by coolbeanbob … update method to display blank form // } // else // JOptionPane.showMessageDialog(null, "This is the first record"); //display message to… to next record // updateScreen(); // }//end if // else JOptionPane.showMessageDialog(null, "This is the last record!"); //else display message… Null pointer exception ? 12 Years Ago by nah094020 …(T data) { this.data=data; left=null; right=null; } } //references the root of tree…;T> someRoot) { if(someRoot.left!=null&&someRoot.right!=null) { return true; } else { return… Null pointer Exception 16 Years Ago by neutralfox …File file; InputStreamReader in = null; OutputStream out = null; BufferedReader br = null; PrintWriter pw = null; String filenm = null; String fn; public FTPClient(){… // pw.println(filenm); the first one JOptionPane.showMessageDialog(null, "Test .... "); } fis.close(); … Re: null pointer assignment 15 Years Ago by lafigueroa … will get a problem in the destructor [CODE] while(tmp!=NULL) { tmp=tmp->next; delete(tmp->previous); } … it is possible that tmp->next is null! you could do the following [CODE] while(tmp… != NULL) { list* tmp2=tmp->next; // save tmp->… Re: null pointer assignment 15 Years Ago by rajdey1 … will get a problem in the destructor [CODE] while(tmp!=NULL) { tmp=tmp->next; delete(tmp->previous); } … it is possible that tmp->next is null! you could do the following [CODE] while(tmp… != NULL) { list* tmp2=tmp->next; // save tmp->… Null Pointer Exception 11 Years Ago by DJ-DOO … getBestPreviewSize(width, height, parameters); if (size != null) { parameters.setPreviewSize(size.width, size.height); camera.… void startPreview() { if (cameraConfigured && camera != null) { camera.startPreview(); inPreview = true; } } SurfaceHolder.Callback… null pointer 18 Years Ago by Noorhiba H.M …constant 0 in a pointer context is converted into a null pointer at compile time. That is, in an initialization… the Unix system call execl takes a variable-length, null-pointer-terminated list of character pointer arguments, and is ….3.) It is probably safest to properly cast all null pointer constants in function calls, to guard against varargs… null pointer exception --- urgent 17 Years Ago by abdulraqeeb33 …private Socket aptsocket=null; int c=0; static ResultSet res=null; static Connection conn=null; static Statement stat=null; private static String… servoff=null; private static int servoff_port…