loop problem

loop problem

View Answers

October 12, 2009 at 2:46 PM

Hi Friend,

Do you want to connect your application with database?

import java.sql.*;
import java.io.*;
import java.util.*;

class Student{
public int id;
public String name;

public Student(){}
public Student(int id, String name) {
super();
this.id = id;
this.name = name;
}
public int getId() {
return id;
}
public String getName() {
return name;
}
}
public class RegistrationSystem {

public static void main(String[] args) throws Exception {
List<Student> list = new ArrayList<Student>();
list.add(new Student(1, "A"));
list.add(new Student(2, "B"));
list.add(new Student(3, "C"));
list.add(new Student(4, "D"));

Scanner scan = new Scanner(System.in);
int menu = 0;
System.out.println("School Registration System Main Menu");
System.out.println();
System.out.println("1. Add a student");
System.out.println("2. Remove a student");
System.out.println("3. Display student list");
System.out.println("4. Exit");
boolean quit = false;
do{
System.out.print("Please enter your choice: ");
menu = scan.nextInt();
System.out.println();

switch(menu) {
case 1:
System.out.print("Enter student ID: ");
int ID = scan.nextInt();
System.out.print("Enter your name: ");
String name= scan.next();
list.add(new Student(ID,name));
for (Student s : list){
System.out.println(s.getId()+" " +s.getName());
}
try{
Class.forName("com.mysql.jdbc.Driver");
Connection con = DriverManager.getConnection("jdbc:mysql://localhost:3306/register","root","root";);
Statement st=con.createStatement();
int i=st.executeUpdate("insert into student values('"+ID+"','"+name+"')");
}
catch(Exception e){}

break;
case 2:
System.out.print("Enter Student id to remove the student from list: ");
int id = scan.nextInt();
int i=id-1;
list.remove(i);
break;
case 3:
System.out.println("Id Name");
for (Student s : list){
System.out.println(s.getId()+" " +s.getName());
}
break;
case 4:
quit = true;
break;
default:
System.out.println("Invalid Entry!");
}
}

while (!quit);
}
}

Thanks









Related Tutorials/Questions & Answers:
loop problem - Java Beginners
loop problem  I trying to write a program which prints out even numbers, I've got that part, however, I need to only have 5 numbers per line. ex: 2 4 6 8 10 12 14 16 18 20 I tried using a counter, but I'm missing
loop problem - Java Magazine
loop problem  import java.util.Scanner; class mychoice{ public static void main(String[] args){ Scanner choice = new Scanner(System.in... to main menu to select new item. //what loop to use? break
Advertisements
loop
loop  what is the difference b/w do while,while and for loop..with example
loop
loop  i want to write my name(inder) through loop in java using star
for loop
for loop  what is for loop   Loops are used for iteration... for a number of times it is finite loop and if repetition is done infinitely it is infinite loop. Java provides several loop structures for iteration. Those
For loop
For loop  Hi! Please explain the following loop: for(i=0;i<a[j];i++) THANX!!   Please reply as soon as possible
loop
loop  strong textHello can someone help me with this problem,I need to output the following code using a loop the code is as follows with the user inputs in inverted commas,thanks. ENTER CODE(XX to Stop) CODE:"D24" QUANTITY:"2
for loop
for loop  how to performs the for loop when 2 inputs given like displays the triangle shape and how to take initial values or declaration values plz explain in detailed ex. 1 12 123 1234
Loop
to understand a loop my quesiton are: what du i do wrong in my code since.... (made in blueJ) Class Loop public void loopUpGeneral(int start, int stop... dk  Hi, Please check the for loop once again: for (int i
For Loop
For Loop  Write a program using a for loop that computes the following sum: 1/2 + 2/2 + 3/2 + 4/2 + 5/2 + ... N/2 N will be an integer limit the user enters. This is an example of my upcoming quiz. I need help on knowing
for loop
for loop  using only two for loop how can print below numbers 1 2 2 3 3 3 4 4 4 4 5 5 5 5 5 6 6 6 6 6 6 7 7 7 7 7 7 7 8 8 8 8 8 8 8 8 9 9 9 9 9 9 9 9 9 8 8 8 8 8 8 8 8 7 7 7 7 7 7 7 6 6 6 6 6 6 5 5 5 5
for loop
for loop  using only two for loop how can print below numbers 1 2 2 3 3 3 4 4 4 4 5 5 5 5 5 6 6 6 6 6 6 7 7 7 7 7 7 7 8 8 8 8 8 8 8 8 9 9 9 9 9 9 9 9 9 8 8 8 8 8 8 8 8 7 7 7 7 7 7 7 6 6 6 6 6 6 5 5 5 5
For..in loop
For..in loop         In this tutorial we will study for..in loop which is similar to for each loop of C#, Java and other popular languages, in this example
Java for loop
Java for loop  Can a for statement loop indefinitely
For Loop - Struts
For Loop  Hi, How to use for loop in Struts2. I don't want use.... How to use the For loop in JSP. Thanks, Rajesh.  Hi Rajesh, i am sending simple use of for loop. In this example, you will see the use
for( ) loop in php
for( ) loop in php  Generally, when we use for loop in PHP or any other programming language why we use i++ and not ++i. What is the reason behind
Limits of "For loop"
Limits of "For loop"  Hi, How can I check the upper limit and lower limit of 'FOR' loop during unit testing using Junit. Thanks & Regards Ankit
for( ) loop in php
for( ) loop in php  Generally, when we use for loop in PHP or any other programming language why we use i++ and not ++i. What is the reason behind
How to write a loop and a while loop
How to write a loop and a while loop  How do I write a 1 loop and a 1 while loop for the example code: public boolean isTheFirstOneBigger (int num1, int num2) { if (num1 > num2) { return true
loop statements
loop statements  write a program that reads from input an interger n and prints the factorial of all numbers between 1 and n
for loop in java
for loop in java  54321 4321 321 21 1 using for loop or nested 1 1 2 1 2 3 1 2 3 4 1 2 3 4 5 5 4 3 2 1 4 3 2 1 3 2 1 2 1 1 using for loop or nested... 8 9 6 7 8 9 10 all for loop code plz friends guide me
for loop in java
for loop in java  54321 4321 321 21 1 using for loop or nested 1 1 2 1 2 3 1 2 3 4 1 2 3 4 5 5 4 3 2 1 4 3 2 1 3 2 1 2 1 1 using for loop or nested... 8 9 6 7 8 9 10 all for loop code plz friends guide me
for loop in java
for loop in java  54321 4321 321 21 1 using for loop or nested 1 1 2 1 2 3 1 2 3 4 1 2 3 4 5 5 4 3 2 1 4 3 2 1 3 2 1 2 1 1 using for loop or nested... 8 9 6 7 8 9 10 all for loop code plz friends guide me
for loop in java
for loop in java  54321 4321 321 21 1 using for loop or nested 1 1 2 1 2 3 1 2 3 4 1 2 3 4 5 5 4 3 2 1 4 3 2 1 3 2 1 2 1 1 using for loop or nested... 8 9 6 7 8 9 10 all for loop code plz friends guide me
for loop in java
for loop in java  54321 4321 321 21 1 using for loop or nested 1 1 2 1 2 3 1 2 3 4 1 2 3 4 5 5 4 3 2 1 4 3 2 1 3 2 1 2 1 1 using for loop or nested... 8 9 6 7 8 9 10 all for loop code plz friends guide me
loop example
loop example   1 1 2 1 2 3 1 2 3 4 1 2 3 4 5 can you give me the code to get the number pyramid
For Loop/PHP
For Loop/PHP  Write a class called math. It is to have one property... 12345. How would you write this as a loop? Would I need to use the for loop or do/while loop?   PHP Factorial Example: <?php $n = 5; $i = 1; $f
Javascript Loop Error - WebSevices
Javascript Loop Error  ...(); Error: Only if loop will executed, Does not comes to else if part. So tell... there is no "else if" part.Plz give details full code and problem in details. Thanks
foreach loop in php
foreach loop in php  Foreach loop in php
Until Loop In a Procedure
_TO_REPLACE_1 Many Beginners trapped with the problem of  execution of loop... Until Loop In a Procedure       Until Loop In a Procedure is used to execute a set of statements
loop program
loop program  please tell me the code for the output 1 2 3foo 4 5bar 6foo 7baz 8 9foo 10 11 12foo 13 14baz 15foo bar 16 17 18foo . .......till 50
For loop java
For loop java  1 1 2 3 1 2 3 4 1 2 3 4 5 1 2 3 3 4 5 4 5 6 7 5 6 7 8 9 6 7 8 9 10
for loop in java
for loop in java  1 1 2 3 1 2 3 4 1 2 3 4 5 1 2 3 3 4 5 4 5 6 7 5 6 7 8 9 6 7 8 9 10 using for loop in java   Java Number Pattern 1 1 2 1 2 3 1 2 3 4 1 2 3 4 5 public class PatternExample{ public static void main
for loop
for loop
php array loop count
php array loop count  Count the array using loop in php
php array loop while
php array loop while  Using the php array while loop
using for loop in javascript
using for loop in javascript  How to use for loop in JavaScript
adding loop
adding loop  Hi I have a program that is not compiling when I add a loop can you help me?The program below is compiling without the loop. >... the loop is: > Blockquote import java.util.*; class Output { public
loop, control structures
loop, control structures  a java program to print
loop, control statements
loop, control statements  a java program to print
Problem with arraylist
Problem with arraylist  I am currently working on a java project and there is an if loop within the for loop.... for(int i = 1;i < iterationsNo... and clusterMean1 are not equal and so the the statements insdie the if loop must
php do while loop
php do while loop  Difference between do while loop and simple loop in PHP
php array loop foreach
php array loop foreach  Display the php array elements in foreach loop
While loop Statement.
While loop Statement.   How to Print Table In java using While Loop
ModuleNotFoundError: No module named 'for_loop'
ModuleNotFoundError: No module named 'for_loop'  Hi, My Python... 'for_loop' How to remove the ModuleNotFoundError: No module named 'for_loop... to install padas library. You can install for_loop python with following
ModuleNotFoundError: No module named 'for_loop'
ModuleNotFoundError: No module named 'for_loop'  Hi, My Python... 'for_loop' How to remove the ModuleNotFoundError: No module named 'for_loop... to install padas library. You can install for_loop python with following
ModuleNotFoundError: No module named 'loop'
ModuleNotFoundError: No module named 'loop'  Hi, My Python program is throwing following error: ModuleNotFoundError: No module named 'loop' How to remove the ModuleNotFoundError: No module named 'loop' error
ModuleNotFoundError: No module named 'for_loop'
ModuleNotFoundError: No module named 'for_loop'  Hi, My Python... 'for_loop' How to remove the ModuleNotFoundError: No module named 'for_loop... to install padas library. You can install for_loop python with following
While loop - Java Beginners
While loop  Given a number, write a program using while loop to reverse the digits of the number. Eg. the no. is 12345, should be written as 54321.  Hi friend, Code to solve the problem : import java.io.*; class

Ads