Float and Double classes define MAX_VALUE, MIN_VALUE, POSITIVE_INFINITY, and NEGATIVE_INFINITY. : double « Java Source And Data Type « SCJP

1. SCJP
2. Java Source And Data Type
3. double

public class MainClass {
  public static void main(String[] argv) {
    System.out.println(Float.MAX_VALUE);
    System.out.println(Double.MAX_VALUE);
    System.out.println(Float.MIN_VALUE);
    System.out.println(Double.MIN_VALUE);
    System.out.println(Float.NEGATIVE_INFINITY);
    System.out.println(Double.POSITIVE_INFINITY);
  }
}

3.4028235E38
1.7976931348623157E308
1.4E-45
4.9E-324
-Infinity
Infinity