java number
int integerNumber = 2147483647; // Max Value or Integer.MAX_VALUE.
long longNumber = 9223372036854775807L; // Max Value or Long.MAX_VALUE.
double doubleNumber = 1.7976931348623157E308D; // Max Value or Double.MAX_VALUE.
float floatNumber = 3.4028235E38F; // Max Value or Float.MAX_VALUE.java is number
String someString = "123123";
boolean isNumeric = someString.chars().allMatch( Character::isDigit );Copyright © 2021 Codeinu
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