convert string to numbers Example
Any string representing a primitive type i.e. char boolean short byte int long float double can be converted to its primitive value using a parse method of the primitive's wrapper class.For example, the method Integer.parseInt() takes a string as parameter and converts it to its primitive int value. If the string could not be converted to an int, for example if it contained a decimal point, then an exception would be thrown.
// Convert string to numbers (ints, doubles) and booleans
class ConvertStringToNumberExample {
public static void main(String[] args) {
String s = "2345";
int i = Integer.parseInt(s);
System.out.println("i="+i);
s = "0.00173";
double d = Double.parseDouble(s);
System.out.println("d="+d);
s = "true";
boolean b = Boolean.parseBoolean(s);
System.out.println("b="+b);
}
}