Programming VIP

1. Process control statement Java provides some process control statements to control the execution process of the program Sequential structure - program default process Branch structure - if, switch Loop structure - for, white, do... while 1. Branch structure 1.if branch The code that executes a branch is determined according to the determ ...

🏠: Blog home page: Incoming bogey 📕: Today's article: [Java] IO series BufferedReader 💝: I hope my analysis of IO series can help you 🎈 🌱: Boji is still trying to learn JavaSE. If you have any questions or omissions, please give me more advice 🙏 ☀️: On the way of self-study and growth, thank you for your company! No hurry ， No Pause ...

static keyword Variables, methods, code blocks and internal classes used for modification (not involved for the time being). The modified members belong to the class, not just It belongs to an object. In other words, since it belongs to a class, it can be called without creating an object. Class variable When static modifies a member variabl ...

Task 3: operator 1. Arithmetic operator +Represents the addition operator-Represents the subtraction operator*Represents the multiplication operator/Represents the division operator%Represents the modulo / remainder operator package com.lagou.Day03; /** * Arithmetic operator */ public class Demo01 { public static void main(String[] ar ...

1, Overview and test of unique functions of List collection 1. void add(int index,E element) adds an element at the specified position. The test is as follows: public static void main(String[] args) { List list = new ArrayList(); list.add("a"); list.add("b"); list.add("c"); list.add("d"); l ...

1, Basic function test of Collection The first method: Boolean add (E) add elements. The test is as follows: public static void main(String[] args) { Collection c = new ArrayList(); //A parent class reference points to a child class object boolean b1 = c.add("abc"); boolean b2 = c.add(true); //Auto boxing new Bo ...

Java library management system ⚡ Preface ⚡ ️ After reading this column, you can summarize the knowledge you have learned from the main application of Java, and hope to deepen your knowledge after reading this column. 🍉 Blog home page: 🍁 [warm the sun like the wind]🍁 🍉 Boutique Java column [Javase],[Java data structure] 🍉 Welcome to ...

Java object-oriented abstract classes and interfaces ⚡ Preface ⚡ ️ This article is the third article in the object-oriented part. See the links for the first two articles Package and inheritance,Combination and polymorphism . Abstract classes and interfaces are a further step of the parent class in the inheritance relationship. It is easier ...

definition The reflection mechanism of Java is to know all the properties and methods of any class in the running state; For Ren An object can call any of its methods and properties. Since we can get it, we can modify some type information; This function of dynamically obtaining information and dynamically calling object methods is called ...

preface The series of articles is more suitable for non science students. From shallow to deep, step by step, and embark on the road of big data from the foundation Let's work together to achieve our goals and realize our ideals Finally, please leave your little ❤, Give me a little encouragement 1, Object oriented thought 1.1 over ...