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java-code-example/!temp/src/TestFinally.java at master · cherkavi/java-code-example · GitHub
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java-code-example
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java-code-example
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!temp
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src
/
TestFinally.java
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executable file
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java-code-example
/
!temp
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src
/
TestFinally.java
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executable file
·
90 lines (79 loc) · 2.37 KB
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/** îòîáðàæåíèå ðàçëè÷íûõ ñèòóàöèé, êîòîðûå ìîãóò èìåòü ìåñòî ïðè èñïîëüçîâàíèè êîíñòðóêöèè finally*/
public
class
TestFinally
{
/** äåìîíñòðàöèÿ ïîòåðÿííîãî èñêëþ÷åíèÿ */
private
static
void
lostException
()
throws
Exception
{
try
{
System
.
out
.
println
(
"try block"
);
throw
new
Exception
(
"try Exception "
);
}
catch
(
Exception
ex
){
System
.
out
.
println
(
"catch block"
);
// this exception was failed
throw
new
Exception
(
"catch Exception"
);
}
finally
{
System
.
out
.
println
(
"finally block"
);
throw
new
Exception
(
"finally Exception"
);
}
}
/** äåìîíñòðàöèÿ ïîòåðÿííîãî èñêëþ÷åíèÿ */
private
static
void
lostException2
()
throws
Exception
{
try
{
System
.
out
.
println
(
"try block"
);
throw
new
Exception
(
"try Exception "
);
}
finally
{
System
.
out
.
println
(
"finally block"
);
throw
new
Exception
(
"finally Exception "
);
}
}
/** äåìîíñòðàöèÿ íåóäàâøåãîñÿ âîçâðàòà ôóíêöèè */
private
static
int
lostReturn
(){
try
{
System
.
out
.
println
(
"try"
);
return
5
;
}
finally
{
System
.
out
.
println
(
"finally"
);
// try remark finally return
return
999
;
}
}
/** äåìîíñòðàöèÿ íåóäàâøåãîñÿ âîçâðàòà ôóíêöèè */
private
static
int
lostReturn2
(
boolean
value
){
try
{
System
.
out
.
println
(
"try"
);
if
(
value
==
true
){
throw
new
Exception
();
}
else
{
return
5
;
}
}
catch
(
Exception
ex
){
System
.
out
.
println
(
"catch"
);
return
22
;
}
finally
{
System
.
out
.
println
(
"finally"
);
// try remark finally return
//return 999;
}
//return 7;
}
public
static
void
main
(
String
[]
args
){
System
.
out
.
println
(
"Demonstration lost exception BEGIN:"
);
try
{
lostException
();
}
catch
(
Exception
ex
){
System
.
out
.
println
(
"Main:"
+
ex
.
getMessage
());
}
System
.
out
.
println
(
"Demonstration lost exception END:"
);
System
.
out
.
println
(
"Demonstration lost exception 2 BEGIN:"
);
try
{
lostException2
();
}
catch
(
Exception
ex
){
System
.
out
.
println
(
"Main:"
+
ex
.
getMessage
());
}
System
.
out
.
println
(
"Demonstration lost exception 2 END:
\n
\n
\n
"
);
System
.
out
.
println
(
"Demonstration lost Return BEGIN:"
);
System
.
out
.
println
(
lostReturn
());
System
.
out
.
println
(
"Demonstration lost Return END: "
);
System
.
out
.
println
(
"Demonstration lost Return 2 BEGIN:"
);
System
.
out
.
println
(
lostReturn2
(
false
));
System
.
out
.
println
(
"Demonstration lost Return 2 END: "
);
}
}
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