CODEWITHSUNDEEP
java
Jerex Garcia
Jerex Garcia

Reputation: 1

Getting Long Data Type

Can you help me how to get the value of input data that the data type is long. I am making a queue program that has a GUI. I am having error in getting the value of long. This is my method.

    public Queue(int s) // constructor
    {
    maxSize = s;
    queArray = new long[maxSize];
    front = 0;
    rear = -1;
    nItems = 0;
    }

this is my button who will get the value.

    private void jButton2ActionPerformed(java.awt.event.ActionEvent evt) {
    a.Queue(jTextField2.valueOf(j) = long);
    jTextField2.setText("");
    refresh();
    jLabel2.setText("");

    // TODO add your handling code here:
}

or can you just give me a sample program of queue that has a GUI. THANKS. :)

Upvotes: 0

Views: 111

Answers (2)

Subhrajyoti Majumder
Subhrajyoti Majumder

Reputation: 41220

I think you need to get the value from jTextField2 and convert into long and insert it into Queue.

String value = jTextField2.getText();
long lvalue = Long.parseLong(value);
a.Queue(lvalue);

or in one line a.Queue(Long.parseLong(jTextField2.getText()));

Long.parseLong might throw RuntimeException, whihc should be handled.

private void jButton2ActionPerformed(java.awt.event.ActionEvent evt) {
   try{
       a.Queue(Long.parseLong(jTextField2.getText()));
       ...
   }catch(RuntimeException rex){...}
}

Upvotes: 0

Rahul
Rahul

Reputation: 45070

If you want to get the long data from the jTextField2 which is an object of JTextField, then you can do something like this.

long j = Long.parseLong(jTextField2.getText()); // get the string data and parse it to long
// use the long value `j` as you want

Upvotes: 2

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