class Test {
  Test() {
    int x = 0x23, // hex
        o = 023, // octal
        b = 0b0101_100; // bit (with arbitrary underscore)
    
    long l = 24324L; // long
    float f = 0.123f; // float
    double d = 0.223d; // double
    double d2 = 123.02e-12; // * 10^-12
  }
}