Java Programming and Data Structures - Chapter 4: Mathematical Functions, Characters, and Strings

A collection of vocabulary flashcards for key concepts related to mathematical functions, characters, and strings in Java programming.

Math Class

A class in Java that provides many useful methods for performing common mathematical functions.

exp(double a)

Returns e raised to the power of a.

log(double a)

Returns the natural logarithm of a.

sqrt(double a)

Returns the square root of a.

ceil(double x)

Returns x rounded up to its nearest integer.

floor(double x)

Returns x rounded down to its nearest integer.

abs(a)

Returns the absolute value of the parameter a.

random()

Returns a random double value in the range [0.0, 1.0).

Character Data Type

Represents a single 16-bit Unicode character in Java.

Unicode

A 16-bit encoding scheme that supports the representation of characters from various languages.

isDigit(ch)

Returns true if the specified character is a digit.

String Type

A data type in Java that represents a sequence of characters.

length()

Returns the number of characters in a string.

charAt(index)

Returns the character at the specified index from a string.

concat(s1)

Returns a new string that concatenates this string with string s1.

toUpperCase()

Returns a new string with all letters in uppercase.

toLowerCase()

Returns a new string with all letters in lowercase.

trim()

Returns a new string with whitespace removed from both ends.

printf()

A method used to format output using specified format specifiers.

%d

Format specifier for decimal integers.

%f

Format specifier for floating-point numbers.