class
GFG {
public
static
boolean
isStringOnlyAlphabet(String str)
{
return
(
(str !=
null
) && (!str.equals(
""
))
&& (str.chars().allMatch(Character::isLetter)));
}
public
static
void
main(String[] args)
{
System.out.println(
"Test Case 1:"
);
String str1 =
"GeeksforGeeks"
;
System.out.println(
"Input: "
+ str1);
System.out.println(
"Output: "
+ isStringOnlyAlphabet(str1));
System.out.println(
"\nTest Case 2:"
);
String str2 =
"Geeks4Geeks"
;
System.out.println(
"Input: "
+ str2);
System.out.println(
"Output: "
+ isStringOnlyAlphabet(str2));
System.out.println(
"\nTest Case 3:"
);
String str3 =
null
;
System.out.println(
"Input: "
+ str3);
System.out.println(
"Output: "
+ isStringOnlyAlphabet(str3));
System.out.println(
"\nTest Case 4:"
);
String str4 =
""
;
System.out.println(
"Input: "
+ str4);
System.out.println(
"Output: "
+ isStringOnlyAlphabet(str4));
}
}