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Java Streams CheatSheet
devv
3,485 views
Streams
Effectively final variable.
1
5
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15
// {
//Incorrect
for
(
int
i =
0
; i <
10
; i++) {
new
Thread(() -> {
System.out.println(
"i = "
+ i);
// Does not compile!
}).start();
}
// {
Run
1
5
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13
// {
for
(
int
i =
0
; i <
10
; i++) {
int
j = i;
//effectively final
new
Thread(() -> System.out.println(
"i = "
+ j)).start();
}
// {
Run
1
5
6
7
8
9
10
11
15
// {
//Incorrect
for
(
int
i =
0
; i <
10
; i++) {
int
j = i;
new
Thread(() -> System.out.println(
"i = "
+ j)).start();
j++;
}
// {
Run
8
0
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