Literal Formats for Floating-Point - Example

This section provides a tutorial example on how to use floating-point literals in 2 formats: decimal and hex.

Now let's see a tutorial program example on floating-point literals in decimal and hex formats:

 * Copyright (c) All Rights Reserved.

class FloatingPointLiteral {
   public static void main(String[] a) { o = System.out;
      o.println("Decimal Floating-Point Literals:");
      o.println("   Base part:     365.242196     = "+365.242196);
      o.println("   With exponent: 3.65242196e2   = "+3.65242196e2);
      o.println("   Negative exponent:    1.0e-9  = "+1.0e-9);
      o.println("   float type:           1.0e-9F = "+1.0e-9F);
      o.println("   Using _:     3.65_242_196e2   = "+3.65_242_196e2);

      o.println("Hex Floating-Point Literals:");
      o.println("   1:                     0x1.0p0  = "+0x1.0p0);
      o.println("   16:                   0x10.0p0  = "+0x10.0p0);
      o.println("   16*16:                0x10.0p0  = "+0x10.0p0);
      o.println("   1/16:                  0x0.1p0  = "+0x0.1p0);
      o.println("   1/16/16:               0x0.01p0 = "+0x0.01p0);
      o.println("   With exponent:     0x1.23456p8  = "+0x1.23456p8);
      o.println("   Negative exponent: 0x12345.6p-8 = "+0x12345.6p-8);
      o.println("   float type:    0x800000.0p0F = "+0x8000000.0p0F);
      o.println("   Using _:      0x80_0000.0p0F = "+0x80_00000.0p0F);

Compile this example program in a command window and run it:

herong> javac

herong> java FloatingPointLiteral

Decimal Floating-Point Literals:
   Base part:     365.242196     = 365.242196
   With exponent: 3.65242196e2   = 365.242196
   Negative exponent:    1.0e-9  = 1.0E-9
   float type:           1.0e-9F = 1.0E-9
   Using _:     3.65_242_196e2   = 365.242196

Hex Floating-Point Literals:
   1:                     0x1.0p0  = 1.0
   16:                   0x10.0p0  = 16.0
   16*16:                0x10.0p0  = 16.0
   1/16:                  0x0.1p0  = 0.0625
   1/16/16:               0x0.01p0 = 0.00390625
   With exponent:     0x1.23456p8  = 291.27099609375
   Negative exponent: 0x12345.6p-8 = 291.27099609375
   float type:    0x800000.0p0F = 1.34217728E8
   Using _:      0x80_0000.0p0F = 1.34217728E8

Hope you know how to use floating-point literals properly now.

Table of Contents

 About This Book

 JDK - Java Development Kit

 Execution Process, Entry Point, Input and Output

Primitive Data Types and Literals

 Data Types Supported in Java

 Integer Data Types

 Floating-Point Data Types

 Logical (Boolean) Data Type

 Literals of Primitive Types

 Literal Formats for Integers

 Literal Formats for Integers - Example

 Literal Formats for Floating-Point

Literal Formats for Floating-Point - Example

 Literal Formats for Characters

 Literal Formats for Character - Example

 Control Flow Statements

 Bits, Bytes, Bitwise and Shift Operations

 Managing Bit Strings in Byte Arrays

 Reference Data Types and Variables

 Enum Types and Enum Constants

 StringBuffer - The String Buffer Class

 System Properties and Runtime Object Methods

 Generic Classes and Parameterized Types

 Generic Methods and Type Inference

 Lambda Expressions and Method References

 Java Modules - Java Package Aggregation

 Execution Threads and Multi-Threading Java Programs

 ThreadGroup Class and "system" ThreadGroup Tree

 Synchronization Technique and Synchronized Code Blocks

 Deadlock Condition Example Programs

 Garbage Collection and the gc() Method

 Assert Statements and -ea" Option

 Annotation Statements and Declarations

 Java Related Terminologies

 Archived Tutorials


 Full Version in PDF/EPUB