Java for Fucking Idiots: Learn the Basics of Java Programming Without any experience!

"LMNOPQ"
.substring(
2
,
5
);
//"B"
"ABCDEFG"
.substring(
1
,
2
);
//"WH"
"WHAT"
.substring(
0
,
2
);
//"" (empty string)
"GAWRSH"
.substring(
1
,
1
);
Hopefully you’re beginning to comprehend this.
One more thing to mention here. You know how we give the start index and
end index?
Well, Java lets you only give the start index, if you want. The result? You
only make one cut, and Java gives you the entire tail end of the String.
//"Cool"
"Lame Cool"
.substring(
5
);
//"BCDEFGHIJKLMNOP"
"ABCDEFGHIJKLMNOP"
.substring(
1
);
RIP in pieces “A”
split
I like this method. It creates a bunch of smaller Strings out of your String.
You give Java a character to “split” on. The string is karate chopped at each
occurrence of that character. You’re left with an array of the results.
String sentence =
"I just think they’re neat"
;
String[] words = sentence.split(
" "
);
Guess what? We now have an array of the words! That’s 5 items in the
array!

---

{
"I"
,
"just"
,
"think"
,
"they're"
,
"neat"
}
When Java saw an empty space, it dropped a tactical missile and split the
String up. The bits to the left and right ended up in the array.
Freaking nice right there.
trim
Okay, last one. That I’m going to mention…there’s a few more. But this
one’s easy.
It removes all the empty whitespace and newlines from beginning and end
of your String.