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Java-Programs/String/checkFirstCharOfStr.java at master · githubanalyzeruser/Java-Programs · GitHub
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checkFirstCharOfStr.java
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checkFirstCharOfStr.java
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package
String
;
public
class
checkFirstCharOfStr
{
public
static
void
main
(
String
[]
args
) {
String
str
=
"helloo777"
;
Boolean
flag1
=
str
.
substring
(
0
,
1
).
matches
(
"[0-9]"
);
//[0-9] Regular expression to match the number between 0-9.
//we can also use \\d to to check every digit
if
(
flag1
){
System
.
out
.
println
(
"First Character is a number..!"
);
}
else
{
System
.
out
.
println
(
"First character is not a number..!"
);
}
}
}
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