How to manage variables

[vishalonne]

Dear All

I am tring to do 1 simple job but some where I am missing something
I designed 1 GUI in Netbeans 3 jTextFields, 2 jButtons (design attached)

Step 1-> Input any number in 1st text field 2
Step 2-> Input any number in 2nd text field 2
Step 3-> Click on Add button and sum of both the entered number should be displayed in 3rd Box 4
Step 4-> Change the 1st Text Field number ONLY 3
Step 5-> Again do the addition by clicking same Add Button 5
Step 6-> Now multiply the both sumed up no and display in the 3rd box 20

[white feather]

Have you done any code for the models or controllers?

[vishalonne]

Have you done any code for the models or controllers?

Hi White Feather

Thanx for considering my post

Yes a small code for both the jButtons

int v1;
int v2;
int v3;
int v4;
int v5;
int v;
    private void b1ActionPerformed(java.awt.event.ActionEvent evt) {                                   

v1=Integer.parseInt(t1.getText());
v2=Integer.parseInt(t2.getText());
v3=v1+v2;
t3.setText(Integer.toString(v3));
v4=v1+v2;
t3.setText(Integer.toString(v3));
v=v3;
    }                                  

    private void b2ActionPerformed(java.awt.event.ActionEvent evt) {                                   
v5=v*v4;
t4.setText(Integer.toString(v5));    
    }

[white feather]

first off you'll want to catch a parsing error for the text in the text fields
And do the steps always need to be the same way?

[vishalonne]

first off you'll want to catch a parsing error for the text in the text fields
And do the steps always need to be the same way?

Can't understand waht you want to say

[white feather]

Are the steps you listed (1-6) must be followed. For example: if the user the multiplication first, will it throw an error?

[vishalonne]

Hi White Feather

Yes I have to follow all the Six steps as mentioned and if I do multiplication first it will not throw any exception. But without any value if I add there I will get exception.
But that is not my problem problem is I am not getting correct output.