null pointer exceptions

null pointer exceptions

import java.util.*; public class employee { static int ch; static int emp[]; String name; int id,age; float sal; void insert() { employee[] emp=new employee[90];

    Scanner r=new Scanner(System.in);
    System.out.println("Enter the no of employees");
    int n=r.nextInt();
    for(int i=0;i<n;i++)
    {
        System.out.println("Enter details of employee"+(i+1));
        emp[i].setdata();
    }
    System.out.println("---------------------details of employee-----------------------\n");
    System.out.println("name \t id \t age \t salary");



    for(int i=0;i<n;i++)

    {

        emp[i].getdata();
    }

}
private void setdata() {
    Scanner sc=new Scanner(System.in);
    System.out.println("Enter the name of employees");
    name=sc.nextLine();
    System.out.println("Enter the id of employees");
    id=sc.nextInt();
    System.out.println("Enter the id of employees");
    age=sc.nextInt();
    System.out.println("Enter the salary of employees");
    sal=sc.nextFloat();
}
private void getdata() {

    System.out.println(name+"\t"+id+"\t"+age+"\t"+sal);
}

void search()
{
    System.out.println("searched");
}
void delete()
{
    System.out.println("deleted");
}
void edit()
{
    System.out.println("edited");
}
public static void main(String[] args) {
    // TODO Auto-generated method stub
    employee e=new employee();
    Scanner s=new Scanner(System.in);
    System.out.println("Enter your Choice:");
    System.out.println("1.Insert\n2.Search\n3.Delete\n4.Edit");
    System.out.println("Enter your Choice:");
    ch=s.nextInt();
    switch(ch)
    {
    case 1:
        e.insert();
        break;
    case 2:
        e.search();
        break;
    case 3:
        e.delete();
        break;
    case 4:
        e.edit();
        break;
    case 5:
        System.out.println("Wrong choice entered");

    }

}

} Exception in thread "main" java.lang.NullPointerException at employee.insert(employee.java:19) at employee.main(employee.java:73) please sort it out

View Answers









Related Tutorials/Questions & Answers:
null pointer exceptions
null pointer exceptions  import java.util.*; public class employee { static int ch; static int emp[]; String name; int id,age; float sal; void insert() { employee[] emp=new employee[90]; Scanner r
null pointer
null pointer  dear sir , what is mean by null pointer in c
Advertisements
null pointer exception in java
null pointer exception in java  What is null pointer exception in Java and when it occurs? Show it with an example.Thanks!   Java Null Pointer Exception
Null pointer execption
Null pointer execption  what is null pointer exception. I am getting the null pointer exception in this line conn= com.mypay.dao.Connection.getConnection(); what is wrong
Null pointer execption
Null pointer execption  what is null pointer exception. I am getting the null pointer exception in this line conn= com.mypay.dao.Connection.getConnection(); what is wrong
Null Pointer Exception
Null Pointer Exception        Null pointer exceptions are the most common run time ... 3.Point out the reason for null. Understand Null Pointer Exception Suppose we have
Httpservletresponse null pointer exception.
Httpservletresponse null pointer exception.  What is Httpservletresponse null pointer exception?   NullPointerException occurs when we try to implement an application without referencing the object and allocating
Null Pointer Exception
Null Pointer Exception  whis is the Null Pointer Exception in java? or define Null Pointer Exception with exp?   NullPointerException occurs, when you try to implement an application without referencing the object
NULL POINTER EXCEPTION
NULL POINTER EXCEPTION    What is the Root cause for Class caste exception in struts frame work .and how 2 handle that 1 please help me
what is a null pointer exception in java
what is a null pointer exception in java  what is a null pointer exception in java
Java null pointer exception handling
Java null pointer exception handling   What... of modifying null value or obtaing a null value in an arrray. To handle null pointer... helpful in handling null exceptions. Example of NullPointerException: try
Java null pointer exception
Java null pointer exception  Hi I've made an array of Book objects that I made, the array is called library and it can hold 100 books, but currently...]!=null){ if(strfield.contains(param)){ result+=library[counter
NUll POINTER EXCEPTION
NUll POINTER EXCEPTION  public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException... of code i m getting null pointer Exception. can some one please explain what
null pointer exception in jsp
null pointer exception in jsp  index.html <html> <body> <table align=center> <form action="Login.jsp" method="get"> <tr> <td colspan=2><h1>Student Login</h1></td><
null pointer error
null pointer error  Respected sir there is a problem in this code when i add any new record in ms access data base from my code, it gives only null pointer error sir please help me my code are given below compilatation class
null pointer error
null pointer error  Respected sir there is a problem in this code when i add any new record in ms access data base from my code, it gives only null pointer error sir please help me my code are given below compilatation class
Null Pointer Exception - Java Beginners
Null Pointer Exception  How Can I Handle NullPoiniterException without using try/catch mechanism
Null pointer exception in hibernate - Hibernate
Null pointer exception in hibernate  Hi i am getting null pointer exception.while running the program in hibernate... is compiled successfully but while running the program i am getting null ponter
null pointer exception cannot be removed
null pointer exception cannot be removed  class list { public... Exception nothing; public int r; public list() { this(null,null,0); } public list(String e,int i) { this.elem = e; this.next = null
Getting Null pointer Exception in the jsp page
Getting Null pointer Exception in the jsp page  I have developed this jsp page to store the data in database.While storing the value of check box in database I am getting null pointer exception in the following code
Getting Null pointer Exception in the jsp page
Getting Null pointer Exception in the jsp page  I have developed this jsp page to store the data in database.While storing the value of check box in database I am getting null pointer exception in the following code
Getting Null pointer Exception in the jsp page
Getting Null pointer Exception in the jsp page  I have developed this jsp page to store the data in database.While storing the value of check box in database I am getting null pointer exception in the following code
Getting Null pointer Exception in the jsp page
Getting Null pointer Exception in the jsp page  I have developed this jsp page to store the data in database.While storing the value of check box in database I am getting null pointer exception in the following code
Why the null Pointer exception is comming? - Java Beginners
Why the null Pointer exception is comming?  My code is given below...")); String []oldOne = null; String[]newOne; int i = 0...}; String line; String line1; String[] tokens = null
Null pointer exception error in Jsp - JSP-Servlet
Null pointer exception error in Jsp  Hi i write a login page. when i validate the login value then the nullpointer exception error is occured. my..." attributes in the input tag So id,userpwd gives null pointer exception
Null pointer exception error in Jsp - JSP-Servlet
Null pointer exception error in Jsp  Expert:Majid Hi i write a login page. when i validate the login value then the nullpointer exception error..." attributes in the input tag So id,userpwd gives null pointer exception. Thanks
Handle Null Pointer Exception while text file upload
Handle Null Pointer Exception while text file upload  I want the code for handling null pointer exception in jsp page. That is I need an error page for null pointer exception. The cause for null pointer exception is while
when do we get null pointer exception in java
when do we get null pointer exception in java  can anybody explain me abt null pointer exception? like in wt situation do v get NPE? Are these 2 strings same? String str; String str=null
Clicking F5 and reentering value throws Null pointer exception
Clicking F5 and reentering value throws Null pointer exception  Hi, My page performs search operation.Normally when i enter a value and click... refresh my page and enter any value it is throwing Null pointer exception.can
pointer
pointer  CONSTRTUCT A STRUCTURE FOR EMPLOYEE RECORD THAT CONTAINS A PERSON'S NAME, AGE, EMPLOYEE AND SALARY.WRITE A STATEMENT THAT DECLARES A VARIABLE empInfo and a pointer emPtr of type EMPLOYEE.then use the pointer to display
Null pointer exceptation-Java Servlet web application,Problem connecting with MYSQL database
Null pointer exceptation-Java Servlet web application,Problem connecting... { private static ConnectionPool pool = null; private static DataSource dataSource = null; private ConnectionPool
exceptions
exceptions  why we get compiletime exceptions(checkedExeption)? forEg:IOException,servletException
pointer error java
pointer error java  How to catch null pointer errors in java if the if(value != null) or null
Pointer a variable
Pointer a variable  hii, Pointer is a variable or not ?   hello,ADS_TO_REPLACE_1 Yes, a pointer is a variable
is there is pointer in java or not??
is there is pointer in java or not??  is there is pointer in java or not plz tell me this with brief?? thank you
pointer to a reference
pointer to a reference  pointer to a reference in C++    #include <iostream> using namespace std; void foo1(int& x) { int* p = &x; *p = 123; } void foo2(int* x) { int
pointer to a reference
pointer to a reference  pointer to a reference in C++    #include <iostream> using namespace std; void foo1(int& x) { int* p = &x; *p = 123; } void foo2(int* x) { int
check null exception java
check null exception java  check null exception java - How to check the null exception on Java?   The null pointer exception in java occurs... on it. See the example null pointer exception
Java Exception - Handle Exceptions in Java
into a number.    Null Pointer Exception Null pointer exceptions are the most common run time  exception error... Java Exception - Handle Exceptions in Java
Function pointer in c
Function pointer in c  What is the difference between function call with function pointer and without function pointer(normal function call
c-language pointer functions
c-language pointer functions  what is the execution process of character pointer functions with example
ModuleNotFoundError: No module named 'pointer'
ModuleNotFoundError: No module named 'pointer'  Hi, My Python... 'pointer' How to remove the ModuleNotFoundError: No module named 'pointer... to install padas library. You can install pointer python with following command
java.lang.NumberFormatException: null
java.lang.NumberFormatException: null   I get org.apache.jasper.JasperException: java.lang.NumberFormatException: null exception when i submit the form plz help me regarding this..ADS_TO_REPLACE_1
incomplete pointer type NSMutableDictionary
incomplete pointer type NSMutableDictionary  My iphone app is throwing the "incomplete pointer type NSMutableDictionary" issue on running the iphone app. What is this issue and how can i remove it. NSMutableDictionary *dict
null interface
null interface   what is the null interface and what is the use of it in real java project ?   Hi Friend, A null interface is an interface without any methods.Is also known as Marker interface. Null interfaces are used
Pointer in java - JSP-Servlet
Pointer in java   Hello ! All i know that java has no pointer type facility. but i have a problem to related pointer. Actually m using a dll and in that dll there is function that rec add of byte type variables address
ModuleNotFoundError: No module named 'exceptions'
ModuleNotFoundError: No module named 'exceptions'  Hi, My Python... 'exceptions' How to remove the ModuleNotFoundError: No module named 'exceptions' error? Thanks   Hi, In your python environment you
ModuleNotFoundError: No module named 'exceptions'
ModuleNotFoundError: No module named 'exceptions'  Hi, My Python... 'exceptions' How to remove the ModuleNotFoundError: No module named 'exceptions' error? Thanks   Hi, In your python environment you
how to deal with exceptions in servlet
how to deal with exceptions in servlet  plz give me the reply
ModuleNotFoundError: No module named 'json_pointer'
ModuleNotFoundError: No module named 'json_pointer'  Hi, My Python... 'json_pointer' How to remove the ModuleNotFoundError: No module named 'json_pointer' error? Thanks   Hi, In your python

Ads