Java quick reference


Comparing strings

In Java, String is a subclass of Object, so you need to compare them using .equals, e.g.

if (myString.equals("my text") {


if (myString == "my text") {

(== evaluates whether it’s the same object, not whether the object has the same contents, etc.)

String formatting

String.format("%s is a string", "this");
String.format("%d is an integer", 2);
String.format("%f is an floating point number", 2.0);