Java Literals Quiz

Java Literals

• Literals represent fixed values directly used in code without needing computation.
• Examples of literals:
  • int a = 1;
  • float b = 2.5;
  • char c = 'F';

Integer Literals

• Numeric values without fractional or exponential parts.
• Four types:
  • Binary (base 2), indicated by 0b
  • Decimal (base 10)
  • Octal (base 8), indicated by a leading 0
  • Hexadecimal (base 16), indicated by 0x
• Examples:
  • Binary: int binaryNumber = 0b10010;
  • Octal: int octalNumber = 027;
  • Decimal: int decNumber = 34;
  • Hexadecimal: int hexNumber = 0x2F;
• Used to initialize integer-type variables: byte, short, int, long.

Floating-point Literals

• Numeric literals representing fractional or exponential forms.
• Examples:
  • double myDouble = 3.4;
  • float myFloat = 3.4F;
  • Scientific notation: double myDoubleScientific = 3.445e2; // 344.5
• Used to initialize float and double type variables.

Character Literals

• Represented by Unicode characters enclosed in single quotes.
• Example: char letter = 'a';
• Escape sequences can be used, such as:
  • \b (backspace)
  • \t (tab)
  • \n (new line)

String Literals

• Sequences of characters enclosed in double quotes.
• Examples:
  • String str1 = "Java Programming";
  • String str2 = "Programiz";

Boolean Literals

• Used to initialize boolean data types with two possible values: true and false.
• Examples:
  • boolean flag1 = false;
  • boolean flag2 = true;