I can't get out of a while loop!

[abrad0189]

Anybody able to help me? I can't get out of a while loop! It works, it just will not stop!

public class getNames
{
public static void main( String args[] )
{
String message = "Employee's Name Is" ; //set String Name
String aPrompt = "Enter Employee's Name:";
String tmp = "";
String name = JOptionPane.showInputDialog( aPrompt );


while
( name != null ){
if ( name != null)
JOptionPane.showInputDialog( "Enter Employee's Name" );
else
JOptionPane.showMessageDialog( null, name ) ;
}


//display the message to welcome the user by name
JOptionPane.showMessageDialog( null, name );
} // end main

[r035198x]

Anybody able to help me? I can't get out of a while loop! It works, it just will not stop!

public class getNames
{
public static void main( String args[] )
{
String message = "Employee's Name Is" ; //set String Name
String aPrompt = "Enter Employee's Name:";
String tmp = "";
String name = JOptionPane.showInputDialog( aPrompt );


while
( name != null ){
if ( name != null)
JOptionPane.showInputDialog( "Enter Employee's Name" );
else
JOptionPane.showMessageDialog( null, name ) ;
}


//display the message to welcome the user by name
JOptionPane.showMessageDialog( null, name );
} // end main

import javax.swing.*;
public class getNames
{
public static void main( String args[] )
{
String message = "Employee's Name Is" ; //set String Name
String aPrompt = "Enter Employee's Name:";
String tmp = "";
String name = JOptionPane.showInputDialog( aPrompt );
 
//Whatever is controlling your loop should change inside that loop for that loop to terminate
while( name != null ){//name is controlling the loop
    //if ( name != null)This is not neccessary. The loop is never entered if name == null
        JOptionPane.showMessageDialog( null, "Welcome "+name ) ;
    //else
 
    name = JOptionPane.showInputDialog( "Enter Employee's Name" );//name is changed here
}
 
JOptionPane.showMessageDialog( null, "Name was null. Exiting.." );
} // end main
}

[abrad0189]

Actually, I do not need it to just exit, but to print out the names entered.

import javax.swing.*;
public class getNames
{
public static void main( String args[] )
{
String message = "Employee's Name Is" ; //set String Name
String aPrompt = "Enter Employee's Name:";
String tmp = "";
String name = JOptionPane.showInputDialog( aPrompt );
 
//Whatever is controlling your loop should change inside that loop for that loop to terminate
while( name != null ){//name is controlling the loop
    //if ( name != null)This is not neccessary. The loop is never entered if name == null
        JOptionPane.showMessageDialog( null, "Welcome "+name ) ;
    //else
 
    name = JOptionPane.showInputDialog( "Enter Employee's Name" );//name is changed here
}
 
JOptionPane.showMessageDialog( null, "Name was null. Exiting.." );
} // end main
}

[r035198x]

Actually, I do not need it to just exit, but to print out the names entered.

Explain then how you want the program to behave. The user keeps on inputing names until what (They click cancel?). If you want to print all the names entered then you need to store them somewhere, arraylist, maybe. Is that it?

[abrad0189]

Explain then how you want the program to behave. The user keeps on inputing names until what (They click cancel?). If you want to print all the names entered then you need to store them somewhere, arraylist, maybe. Is that it?

I would like the user to keep entering names until they enter nothing and then all of the names print out in a text box. Do I need to use an array for that?

[r035198x]

I would like the user to keep entering names until they enter nothing and then all of the names print out in a text box. Do I need to use an array for that?

What do you mean by textbox? Do you mean a TextArea because then you would need a JFrame as well and you might not need the array. A message box which is probably what you are refering to would work this way without using arrays

import javax.swing.*;
public class getNames
{
public static void main( String args[] )
{
String message = "Employee's Name Is" ; //set String Name
String aPrompt = "Enter Employee's Name:";
String tmp = "";
String allNames = "";
String name = JOptionPane.showInputDialog( aPrompt );
 
//Whatever is controlling your loop should change inside that loop for that loop to terminate
while( name != null ){//name is controlling the loop
    //if ( name != null)This is not neccessary. The loop is never entered if name == null
        JOptionPane.showMessageDialog( null, "Welcome "+name ) ;
    //else
    allNames = allNames + "\n" + name;
    name = JOptionPane.showInputDialog( "Enter Employee's Name" );//name is changed here
}
 
JOptionPane.showMessageDialog( null, allNames);
} // end main
}
 

I was only pointing out the possibilities.

[r035198x]

To stop both when cancel is clicked and when nothing is entered, then while loop needs to be

while( name != null ){//name is controlling the loop
    //if ( name != null)This is not neccessary. The loop is never entered if name == null
        JOptionPane.showMessageDialog( null, "Welcome "+name ) ;
    //else
    allNames = allNames + "\n" + name;
    name = JOptionPane.showInputDialog( "Enter Employee's Name" );//name is changed here
    if(name != null && name.equals(""))
    name = null;
}

[abrad0189]

You are awesome! Thank you so much!

To stop both when cancel is clicked and when nothing is entered, then while loop needs to be

while( name != null ){//name is controlling the loop
    //if ( name != null)This is not neccessary. The loop is never entered if name == null
        JOptionPane.showMessageDialog( null, "Welcome "+name ) ;
    //else
    allNames = allNames + "\n" + name;
    name = JOptionPane.showInputDialog( "Enter Employee's Name" );//name is changed here
    if(name != null && name.equals(""))
    name = null;
}