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Java object-oriented knowledge points sorting out

The object refers to a specific food that exists in real life; the class refers to the extraction of common attributes and behaviors of a certain food.

Nov 05, 2020 pm 05:01 PM

java object-oriented

Introduction to the basic components of java virtual machine

The basic components of the Java virtual machine: class loading subsystem, runtime data area, execution engine, and local method interface.

Nov 04, 2020 pm 04:11 PM

java basic component virtual machine

Algorithm learning - Java implements the longest common subsequence

Getting Started with Java: This article shares with you how to implement the longest common subsequence. If you are also interested in the algorithm, please read this article.

Nov 03, 2020 pm 04:06 PM

java algorithm

How to use this keyword in java?

Usage of this keyword in Java: 1. When member variables and local variables have the same name, when using this in a method, it means the member variable in the class where the method is located; 2. In the constructor, this can be called Other constructors in the same class; 3. Use this to pass multiple parameters at the same time.

Nov 02, 2020 pm 04:30 PM

java this keyword

How to use java split method?

The split method in Java is mainly used to separate strings. It can split strings according to matching a given regular expression; the syntax format is "String.split(String regex, int limit)", the parameter regex specifies the regular expression delimiter, limit specifies the number of copies to be divided.

Nov 02, 2020 pm 04:09 PM

java split

What is the function of java static keyword?

In Java, static is a modifier used to modify class member methods and class member variables. In addition, static code blocks can be written to optimize program performance; methods or variables modified by the static keyword do not need to rely on objects. Access, as long as the class is loaded, it can be accessed through the class name.

Nov 02, 2020 am 10:42 AM

java static keyword

How to copy a multi-way linked list in java

How to copy a multi-way linked list in java: This can be achieved by using the HashMap structure.

Oct 30, 2020 pm 04:11 PM

java

Java implements word guessing game

The package needs to be imported into the class created by the project: [import java.util.Scanner;].

Oct 29, 2020 pm 03:19 PM

java Games

java implements custom class loader

Getting started with java: This article introduces you to the method of implementing a custom class loader. It has certain reference value and I hope it can help you.

Oct 28, 2020 pm 04:42 PM

java class loader

Java implements exporting excel files

This article introduces the method of exporting excel files, which has certain reference value. I hope it can help everyone.

Oct 27, 2020 pm 05:14 PM

excel file java

How to convert array to list collection in java?

Methods to convert an array into a list collection in Java: 1. Use the native method and use a for() loop to split the array and add it to the List; 2. Use the Arrays.asList() method; 3. Use Collections.addAll( ) method; 4. Use the List.of() method.

Oct 27, 2020 pm 03:21 PM

java list array gather

What is the shortcut key for eclipse comments?

The shortcut keys for eclipse comments are: 1. "Ctrl+/" shortcut key, the selected code will be commented out by "//"; 2. "Ctrl+Shift+C" shortcut key, the selected code will be commented out by "//" 3. "Ctrl+Shift+/" shortcut key, the selected code will be surrounded by "/*" and "*/" and commented out.

Oct 27, 2020 pm 02:00 PM

eclipse shortcut key Comment

Java prints all prime numbers within N

Getting started with java: This article shares with you the method of printing all prime numbers within N. It has certain reference value and I hope it can help everyone.

Oct 26, 2020 pm 04:06 PM

java prime numbers

Is an interface in java a special abstract class?

The interface in Java is a special abstract class. All methods in the interface are abstract methods, and all properties in the interface are constants; that is, there are only method definitions in the interface but no method implementation. Interfaces are a means to solve the problem that Java cannot use multiple inheritance, but in practice, interfaces play more of a role in setting standards.

Oct 26, 2020 pm 04:00 PM

java abstract class interface