The Java Tutorials have been written for JDK 8. Examples and practices described in this page don't take advantage of improvements introduced in later releases and might use technology no longer available.
SeeDev.java for updated tutorials taking advantage of the latest releases.
SeeJava Language Changes for a summary of updated language features in Java SE 9 and subsequent releases.
SeeJDK Release Notes for information about new features, enhancements, and removed or deprecated options for all JDK releases.

Summary of Control Flow Statements

Theif-then statement is the most basic of all the control flow statements. It tells your program to execute a certain section of codeonly if a particular test evaluates totrue. Theif-then-else statement provides a secondary path of execution when an "if" clause evaluates tofalse. Unlikeif-then andif-then-else, theswitch statement allows for any number of possible execution paths. Thewhile anddo-while statements continually execute a block of statements while a particular condition istrue. The difference betweendo-while andwhile is thatdo-while evaluates its expression at the bottom of the loop instead of the top. Therefore, the statements within thedo block are always executed at least once. Thefor statement provides a compact way to iterate over a range of values. It has two forms, one of which was designed for looping through collections and arrays.