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alx_mszczonow_1
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Patryk Czarnik
alx_mszczonow_1
Commits
15da24ff
Commit
15da24ff
authored
Jun 27, 2023
by
Patryk Czarnik
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"Wypisywanie"
parent
127615b4
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Wypisywanie.java
src/main/java/p10_klasy/v3/Wypisywanie.java
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src/main/java/p10_klasy/v3/Wypisywanie.java
0 → 100644
View file @
15da24ff
package
p10_klasy
.
v3
;
public
class
Wypisywanie
{
public
static
void
main
(
String
[]
args
)
{
Osoba
a
=
new
Osoba
(
"Ala"
,
"Kowalska"
,
30
);
Osoba
b
=
new
Osoba
(
"Ola"
,
"Malinowska"
,
40
);
System
.
out
.
println
(
a
);
System
.
out
.
println
(
b
);
System
.
out
.
println
();
// Każdy obiekt w Javie posiada metodę toString
String
s
=
a
.
toString
();
System
.
out
.
println
(
s
);
// Inne spsoby zamiany obiektów i innych wartości na String:
// String.valueOf - ZAWSZE DZIAŁA. Można przekazać null, obiekt, wartośc typu prostego - zawsze powstanie String
s
=
String
.
valueOf
(
a
);
System
.
out
.
println
(
s
);
// Można też dokleić wartość do napisu za pomocą +, ale to może być mniej wydajne...
s
=
""
+
a
;
System
.
out
.
println
(
s
);
}
}
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