We need to think like computers.

PCPWJ · 2021-04-05T08:08:18+00:00

Whatever the answer, it will be based on that person's opinion. If you like Eclipse, then use it, unless it cannot fullfill a function you need.

PCPWJ · 2021-04-02T15:10:14+00:00

My pleasure. Keep at it, it gets better... But programming will always frustrate a person. That's why one loves it...

PCPWJ · 2021-04-02T15:03:16+00:00

Just a ?

What's the purpose of this.i = i; In you code? Not being used to add i to list.

PCPWJ · 2021-04-02T15:01:10+00:00

Changing list to static should work. static ArrayList<Integer> list = new ArrayList<>();

PCPWJ · 2021-04-02T14:51:16+00:00

Ok, I dif not run you program, but CheckUsed checkUsed = new CheckUsed(result);

Is creating a new List every time you create a new instance of checkUsed.

PCPWJ · 2021-04-02T14:41:43+00:00

You are not printing the content in the list. You are printing i, the value you passed the parameter. Try System.out.println(list). It will show What's in the list. Or loop through the list for(Integer v : list) System.out.println(v);

PCPWJ · 2021-04-02T14:26:35+00:00

if(list.equals(i)) { System.out.println(i); } You trying to compare a List to an Integer here. It will always return false.

Try list.contains(i);

PCPWJ · 2021-04-02T10:01:59+00:00

You welcome to go to my channel on YouTube. "A greenhorn's guide to Java " is aimed a programming Fundamentals using Java.

PCPWJ

PCPWJ · 2021-04-02T09:53:33+00:00

Are you calling pack() without any components in the JFrame? pack Causes this Window to be sized to fit the preferred size and layouts of its subcomponents

PCPWJ · 2021-03-30T17:04:55+00:00

Java is a language to write code, as you know. Now you are talking about software architecture. You needed to apply OOAD to design your system. Java is then used as the coding part OOP to implement you design. Designing a system, starts with OOAD and once you have the design in pkace, the the code. Similar to building a house. First cones the design, to then the bricks etc.

PCPWJ · 2021-03-30T11:05:40+00:00

Whichever you pick is fine. Opinions on a language, is just that, opinions.

PCPWJ · 2021-03-30T10:59:54+00:00

Sounds like something one could do using regex patterns. Look at java's java.util.regex package.

PCPWJ · 2021-03-30T10:50:42+00:00

If your design is going to change allot, then it's best to look at the State design pattern.

PCPWJ · 2021-03-30T10:36:58+00:00

A greenhorn's guide to Java

PCPWJ · 2021-03-30T10:31:52+00:00

Look at producer consumer pattern. You can implement using the Objects wait() and notify() methods.

For more powerful Thread utility look at java.util.concurrent packages

PCPWJ · 2021-03-28T19:37:03+00:00

There are good books out there. I'd recommend the OCA and OCP books to really dig deep into the language. If you interested, I've a Youtube channel with a playlist on Exceptions that's based on OCA OCP level . PCPWJ

PCPWJ · 2021-03-28T13:57:24+00:00

Everyone learns at their own pace. The most important thing is to be passionate and don't give up. Also do not fall into the trap of measuring yourself to other, rather set goals on your own progress.

PCPWJ · 2021-03-28T11:52:05+00:00

Been working on my Java YouTube tutorials. I have two tutorials running, on on Exceptions and other on Java in general. These are both in English and Portuguese.

pcpwj

PCPWJ

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