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Java Streams CheatSheet
devv
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Streams
Effectively final variable.
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// {
//Incorrect
for
(
int
i =
0
; i <
10
; i++) {
new
Thread(()
->
{
System.out.println(
"i = "
+ i);
// Does not compile!
}).start();
}
// {
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// {
for
(
int
i =
0
; i <
10
; i++) {
int
j = i;
//effectively final
new
Thread(()
->
System.out.println(
"i = "
+ j)).start();
}
// {
Enter to Rename, Shift+Enter to Preview
Run
1
5
6
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11
15
// {
//Incorrect
for
(
int
i =
0
; i <
10
; i++) {
int
j = i;
new
Thread(()
->
System.out.println(
"i = "
+ j)).start();
j++;
}
// {
Enter to Rename, Shift+Enter to Preview
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19
0
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