Case Analysis of three Control structures of Java

This article mainly introduces the relevant knowledge of the case analysis of the three major control structures of Java, the content is detailed and easy to understand, the operation is simple and fast, and has a certain reference value. I believe you will gain something after reading this article on the case analysis of the three major control structures of Java. Let's take a look at it.

I. Preface

In the control flow of the code, there are three major structures. They are sequential structure, selective structure, and loop structure. Let's take a look at these three structures and some sentences.

Second, sequential structure

Sequential structure refers to the execution of sentence by sentence in sequence

Public class Demo {public static void main (String [] args) {System.out.println ("order 1"); System.out.println ("order 2"); System.out.println ("order 3"); System.out.println ("order 4");}} III. Select structure

Select structure means to execute a statement selectively

3.1 if selection structure public class Demo {public static void main (string [] args) {int score=90 if (I