That looks rather like Eclipse which I used briefly at university when I had to produce some Java code. The little bit of Java I use now is for Android app development and is done in Android Studio.
I'm guessing it is rather more powerful than Text Pad which I currently use. This does provide Perl syntax highlighting but not much else.
In reply to Re^4: Backdating strict
by Bod
in thread Backdating strict
by Bod
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