Comparing user id with user id from textfile
0
I want to add user information and reject if user id already exists. Currently, my code displays "ID already Exists!" but still adds the user information.
this is my code:
String id = EditManagerID.getText();
String password = EditManagerPassword.getText();
String name = EditManagerName.getText();
String contact = EditManagerContact.getText();
String address = EditManagerAddress.getText();
String role = EditManagerRole.getText();
try
{
String reader;
BufferedReader br = new BufferedReader(new FileReader("ManagerDetails.txt"));
while ((reader = br.readLine())!=null)
{
String split = reader.split(",");
if (id.equals(split[0]))
{
JOptionPane.showMessageDialog(null, "ID already exists!", "Warning", JOptionPane.WARNING_MESSAGE);
}
}
}
catch(Exception e)
{
}
if(id.isEmpty() || password.isEmpty() || name.isEmpty() || contact.isEmpty() || address.isEmpty() || role.isEmpty())
{
JOptionPane.showMessageDialog(null, "Please Fill In Everything!", "Error", JOptionPane.ERROR_MESSAGE);
}
else
{
ClassUser u = new ClassUser (id, password, name, address, contact, role);
File f = new File("ManagerDetails.txt");
try(PrintWriter pw = new PrintWriter(new FileWriter(f, true))){
pw.println(u.toString()); //print into txtfile
JOptionPane.showMessageDialog(this, "Added Successfully!");
} catch(Exception e){
JOptionPane.showMessageDialog(null, "Invalid Input!", "Error", JOptionPane.ERROR_MESSAGE);
}
I tried to add an 'if-else' but not sure what to put as a statement.
java swing netbeans
edited Nov 23 '18 at 17:04
Tobias Wilfert
7492920
asked Nov 23 '18 at 16:59
bk23bk23
103
add a comment |
0
I want to add user information and reject if user id already exists. Currently, my code displays "ID already Exists!" but still adds the user information.
this is my code:
String id = EditManagerID.getText();
String password = EditManagerPassword.getText();
String name = EditManagerName.getText();
String contact = EditManagerContact.getText();
String address = EditManagerAddress.getText();
String role = EditManagerRole.getText();
try
{
String reader;
BufferedReader br = new BufferedReader(new FileReader("ManagerDetails.txt"));
while ((reader = br.readLine())!=null)
{
String split = reader.split(",");
if (id.equals(split[0]))
{
JOptionPane.showMessageDialog(null, "ID already exists!", "Warning", JOptionPane.WARNING_MESSAGE);
}
}
}
catch(Exception e)
{
}
if(id.isEmpty() || password.isEmpty() || name.isEmpty() || contact.isEmpty() || address.isEmpty() || role.isEmpty())
{
JOptionPane.showMessageDialog(null, "Please Fill In Everything!", "Error", JOptionPane.ERROR_MESSAGE);
}
else
{
ClassUser u = new ClassUser (id, password, name, address, contact, role);
File f = new File("ManagerDetails.txt");
try(PrintWriter pw = new PrintWriter(new FileWriter(f, true))){
pw.println(u.toString()); //print into txtfile
JOptionPane.showMessageDialog(this, "Added Successfully!");
} catch(Exception e){
JOptionPane.showMessageDialog(null, "Invalid Input!", "Error", JOptionPane.ERROR_MESSAGE);
}
I tried to add an 'if-else' but not sure what to put as a statement.
java swing netbeans
edited Nov 23 '18 at 17:04
Tobias Wilfert
7492920
asked Nov 23 '18 at 16:59
bk23bk23
103
add a comment |
0
0
0
I want to add user information and reject if user id already exists. Currently, my code displays "ID already Exists!" but still adds the user information.
this is my code:
String id = EditManagerID.getText();
String password = EditManagerPassword.getText();
String name = EditManagerName.getText();
String contact = EditManagerContact.getText();
String address = EditManagerAddress.getText();
String role = EditManagerRole.getText();
try
{
String reader;
BufferedReader br = new BufferedReader(new FileReader("ManagerDetails.txt"));
while ((reader = br.readLine())!=null)
{
String split = reader.split(",");
if (id.equals(split[0]))
{
JOptionPane.showMessageDialog(null, "ID already exists!", "Warning", JOptionPane.WARNING_MESSAGE);
}
}
}
catch(Exception e)
{
}
if(id.isEmpty() || password.isEmpty() || name.isEmpty() || contact.isEmpty() || address.isEmpty() || role.isEmpty())
{
JOptionPane.showMessageDialog(null, "Please Fill In Everything!", "Error", JOptionPane.ERROR_MESSAGE);
}
else
{
ClassUser u = new ClassUser (id, password, name, address, contact, role);
File f = new File("ManagerDetails.txt");
try(PrintWriter pw = new PrintWriter(new FileWriter(f, true))){
pw.println(u.toString()); //print into txtfile
JOptionPane.showMessageDialog(this, "Added Successfully!");
} catch(Exception e){
JOptionPane.showMessageDialog(null, "Invalid Input!", "Error", JOptionPane.ERROR_MESSAGE);
}
I tried to add an 'if-else' but not sure what to put as a statement.
java swing netbeans
edited Nov 23 '18 at 17:04
Tobias Wilfert
7492920
asked Nov 23 '18 at 16:59
bk23bk23
103
I want to add user information and reject if user id already exists. Currently, my code displays "ID already Exists!" but still adds the user information.
this is my code:
String id = EditManagerID.getText();
String password = EditManagerPassword.getText();
String name = EditManagerName.getText();
String contact = EditManagerContact.getText();
String address = EditManagerAddress.getText();
String role = EditManagerRole.getText();
try
{
String reader;
BufferedReader br = new BufferedReader(new FileReader("ManagerDetails.txt"));
while ((reader = br.readLine())!=null)
{
String split = reader.split(",");
if (id.equals(split[0]))
{
JOptionPane.showMessageDialog(null, "ID already exists!", "Warning", JOptionPane.WARNING_MESSAGE);
}
}
}
catch(Exception e)
{
}
if(id.isEmpty() || password.isEmpty() || name.isEmpty() || contact.isEmpty() || address.isEmpty() || role.isEmpty())
{
JOptionPane.showMessageDialog(null, "Please Fill In Everything!", "Error", JOptionPane.ERROR_MESSAGE);
}
else
{
ClassUser u = new ClassUser (id, password, name, address, contact, role);
File f = new File("ManagerDetails.txt");
try(PrintWriter pw = new PrintWriter(new FileWriter(f, true))){
pw.println(u.toString()); //print into txtfile
JOptionPane.showMessageDialog(this, "Added Successfully!");
} catch(Exception e){
JOptionPane.showMessageDialog(null, "Invalid Input!", "Error", JOptionPane.ERROR_MESSAGE);
}
I tried to add an 'if-else' but not sure what to put as a statement.
java swing netbeans
java swing netbeans
edited Nov 23 '18 at 17:04
Tobias Wilfert
7492920
asked Nov 23 '18 at 16:59
bk23bk23
103
edited Nov 23 '18 at 17:04
Tobias Wilfert
7492920
asked Nov 23 '18 at 16:59
bk23bk23
103
edited Nov 23 '18 at 17:04
Tobias Wilfert
7492920
edited Nov 23 '18 at 17:04
Tobias Wilfert
7492920
edited Nov 23 '18 at 17:04
Tobias Wilfert
7492920
7492920
asked Nov 23 '18 at 16:59
bk23bk23
103
asked Nov 23 '18 at 16:59
bk23bk23
103
asked Nov 23 '18 at 16:59
bk23bk23
103
103
add a comment |
add a comment |
1 Answer
1
active
oldest
votes
0
In your code you 're saying if id already exists show message "ID already exists!" and then you continue adding users info anyway.
In your if id already exists statement set a boolean variable found to true and then make one more if statement and check if found is true or false.
boolean found = false;
// ...
if (id.equals(split[0]))
{
JOptionPane.showMessageDialog(null, "ID already exists!", "Warning",
JOptionPane.WARNING_MESSAGE);
found = true;
//stop the while
break;
}
// ...
//check if id already exists or not. if not then add users info
if(!found){
//put your adding users info code here
}
answered Nov 23 '18 at 17:13
oskozachoskozach
6615
I've tried this, but it just adds the user infinitely.
– bk23
Nov 23 '18 at 17:19
ohh, my bad. sorry! wait im editing my answer
– oskozach
Nov 23 '18 at 17:27
no problem, take your time!
– bk23
Nov 23 '18 at 17:32
thank you so much zach! i've been looking at my code for the past hour hhaha
– bk23
Nov 23 '18 at 17:41
add a comment |
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1 Answer
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active
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votes
1 Answer
1
active
oldest
votes
active
oldest
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active
oldest
votes
0
In your code you 're saying if id already exists show message "ID already exists!" and then you continue adding users info anyway.
In your if id already exists statement set a boolean variable found to true and then make one more if statement and check if found is true or false.
boolean found = false;
// ...
if (id.equals(split[0]))
{
JOptionPane.showMessageDialog(null, "ID already exists!", "Warning",
JOptionPane.WARNING_MESSAGE);
found = true;
//stop the while
break;
}
// ...
//check if id already exists or not. if not then add users info
if(!found){
//put your adding users info code here
}
answered Nov 23 '18 at 17:13
oskozachoskozach
6615
I've tried this, but it just adds the user infinitely.
– bk23
Nov 23 '18 at 17:19
ohh, my bad. sorry! wait im editing my answer
– oskozach
Nov 23 '18 at 17:27
no problem, take your time!
– bk23
Nov 23 '18 at 17:32
thank you so much zach! i've been looking at my code for the past hour hhaha
– bk23
Nov 23 '18 at 17:41
add a comment |
0
In your code you 're saying if id already exists show message "ID already exists!" and then you continue adding users info anyway.
In your if id already exists statement set a boolean variable found to true and then make one more if statement and check if found is true or false.
boolean found = false;
// ...
if (id.equals(split[0]))
{
JOptionPane.showMessageDialog(null, "ID already exists!", "Warning",
JOptionPane.WARNING_MESSAGE);
found = true;
//stop the while
break;
}
// ...
//check if id already exists or not. if not then add users info
if(!found){
//put your adding users info code here
}
answered Nov 23 '18 at 17:13
oskozachoskozach
6615
I've tried this, but it just adds the user infinitely.
– bk23
Nov 23 '18 at 17:19
ohh, my bad. sorry! wait im editing my answer
– oskozach
Nov 23 '18 at 17:27
no problem, take your time!
– bk23
Nov 23 '18 at 17:32
thank you so much zach! i've been looking at my code for the past hour hhaha
– bk23
Nov 23 '18 at 17:41
add a comment |
0
0
0
In your code you 're saying if id already exists show message "ID already exists!" and then you continue adding users info anyway.
In your if id already exists statement set a boolean variable found to true and then make one more if statement and check if found is true or false.
boolean found = false;
// ...
if (id.equals(split[0]))
{
JOptionPane.showMessageDialog(null, "ID already exists!", "Warning",
JOptionPane.WARNING_MESSAGE);
found = true;
//stop the while
break;
}
// ...
//check if id already exists or not. if not then add users info
if(!found){
//put your adding users info code here
}
answered Nov 23 '18 at 17:13
oskozachoskozach
6615
In your code you 're saying if id already exists show message "ID already exists!" and then you continue adding users info anyway.
In your if id already exists statement set a boolean variable found to true and then make one more if statement and check if found is true or false.
boolean found = false;
// ...
if (id.equals(split[0]))
{
JOptionPane.showMessageDialog(null, "ID already exists!", "Warning",
JOptionPane.WARNING_MESSAGE);
found = true;
//stop the while
break;
}
// ...
//check if id already exists or not. if not then add users info
if(!found){
//put your adding users info code here
}
answered Nov 23 '18 at 17:13
oskozachoskozach
6615
edited Nov 23 '18 at 17:37
answered Nov 23 '18 at 17:13
oskozachoskozach
6615
answered Nov 23 '18 at 17:13
oskozachoskozach
6615
answered Nov 23 '18 at 17:13
oskozachoskozach
6615
6615
I've tried this, but it just adds the user infinitely.
– bk23
Nov 23 '18 at 17:19
ohh, my bad. sorry! wait im editing my answer
– oskozach
Nov 23 '18 at 17:27
no problem, take your time!
– bk23
Nov 23 '18 at 17:32
thank you so much zach! i've been looking at my code for the past hour hhaha
– bk23
Nov 23 '18 at 17:41
add a comment |
I've tried this, but it just adds the user infinitely.
– bk23
Nov 23 '18 at 17:19
ohh, my bad. sorry! wait im editing my answer
– oskozach
Nov 23 '18 at 17:27
no problem, take your time!
– bk23
Nov 23 '18 at 17:32
thank you so much zach! i've been looking at my code for the past hour hhaha
– bk23
Nov 23 '18 at 17:41
I've tried this, but it just adds the user infinitely.
– bk23
Nov 23 '18 at 17:19
I've tried this, but it just adds the user infinitely.
– bk23
Nov 23 '18 at 17:19
ohh, my bad. sorry! wait im editing my answer
– oskozach
Nov 23 '18 at 17:27
ohh, my bad. sorry! wait im editing my answer
– oskozach
Nov 23 '18 at 17:27
no problem, take your time!
– bk23
Nov 23 '18 at 17:32
no problem, take your time!
– bk23
Nov 23 '18 at 17:32
thank you so much zach! i've been looking at my code for the past hour hhaha
– bk23
Nov 23 '18 at 17:41
thank you so much zach! i've been looking at my code for the past hour hhaha
– bk23
Nov 23 '18 at 17:41
add a comment |
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