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Patryk Czarnik
javab_20230617
Commits
342cdc6f
Commit
342cdc6f
authored
Jul 16, 2023
by
Patryk Czarnik
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parent
441c937a
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2 changed files
with
33 additions
and
1 deletions
+33
-1
Strumienie0.java
...Uzupelnienia/src/p26_streamy/b_dzialanie/Strumienie0.java
+32
-0
Strumienie2_JakToDziala.java
.../src/p26_streamy/b_dzialanie/Strumienie2_JakToDziala.java
+1
-1
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PC21-JavaUzupelnienia/src/p26_streamy/b_dzialanie/Strumienie0.java
0 → 100644
View file @
342cdc6f
package
p26_streamy
.
b_dzialanie
;
import
java.util.ArrayList
;
import
java.util.Arrays
;
import
java.util.List
;
import
java.util.stream.Stream
;
// Operacje wypisują co robią na ekran, abyśmy mogli sprawdzić kolejność ich wykonania.
public
class
Strumienie0
{
static
boolean
sprawdz
(
String
s
)
{
System
.
out
.
println
(
"sprawdzam "
+
s
);
return
s
.
length
()
>
3
;
}
static
String
mapuj
(
String
s
)
{
System
.
out
.
println
(
"mapuję "
+
s
);
return
s
.
toUpperCase
();
}
public
static
void
main
(
String
[]
args
)
{
String
[]
tablica
=
{
"Ala"
,
"Ola"
,
"Iwona"
,
"Magdalena"
,
"Joanna"
,
"Anna"
,
"Teresa"
,
"Żaneta"
,
"Ęcki"
,
"Ącki"
,
"Agnieszka"
,
"ala"
,
"Łucja"
,
"Julia"
,
"Julitta"
,
"Zuzanna"
};
List
<
String
>
lista
=
new
ArrayList
<>(
Arrays
.
asList
(
tablica
));
lista
.
stream
()
.
filter
(
s
->
sprawdz
(
s
))
.
map
(
s
->
mapuj
(
s
))
.
forEach
(
s
->
System
.
out
.
println
(
" * "
+
s
));
}
}
PC21-JavaUzupelnienia/src/p26_streamy/b_dzialanie/Strumienie2_JakToDziala.java
View file @
342cdc6f
...
...
@@ -30,7 +30,7 @@ public class Strumienie2_JakToDziala {
Stream
<
String
>
strumien
=
lista
.
stream
()
.
filter
(
s
->
sprawdz
(
s
))
.
map
(
s
->
mapuj
(
s
));
System
.
out
.
println
(
"Strumień utworzony: "
+
strumien
);
lista
.
add
(
"Dodatkowy"
);
...
...
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