Convert a float to a String in Java with Float.toString() or String.valueOf(), and format it to 2 or N decimal places with String.format() or DecimalFormat. Learn the rounding rules, the locale trap and why 2.675f becomes 2.67.
Java example to convert long to String in two different ways using String.valueOf(long l) and Long.toString(long l) methods. Both are static methods.
Java examples of converting a String to a long type using Long.parseLong(String), Long.valueOf(String) and new Long(String) constructor.
In Java, converting an int value to String is not difficult, but knowing which method may save us a few CPU cycles is worth knowing.
Convert a String to an int in Java with Integer.parseInt() or Integer.valueOf(), handle NumberFormatException with a safe OptionalInt helper, and parse hex, big values, single chars and streams.
Let’s look at a few Java examples of conversions between decimal, binary, octal, and hexadecimal. All examples use native Java APIs without adding any more complexity.
HowToDoInJava provides tutorials and how-to guides on Java and related technologies.
It also shares the best practices, algorithms & solutions and frequently asked interview questions.