how to check string is number in java code example
Example 1: java test if a string is a int
public static boolean isInt(String str) {
try {
@SuppressWarnings("unused")
int x = Integer.parseInt(str);
return true; //String is an Integer
} catch (NumberFormatException e) {
return false; //String is not an Integer
}
}
Example 2: java check if string is number
try {
int n = Integer.parseInt(str);
} catch (NumberFormatException e) {
// str is not a number
}