成人性生交大免费看,成人无码区免费a∨直播,www国产亚洲精品久久麻豆

Article Tags

Home

Technical Articles

Java

Javagetting Started

What is the difference between j2ee and java?

Difference: Java is a high-level computer language, while J2EE is a standard and a popular technical architecture. J2EE, J2ME, and J2SE together constitute the Java2 platform, and they are all implemented in the Java language.

Dec 27, 2019 pm 03:30 PM

j2ee java

What is char in java?

Char is a reserved word in Java and one of the eight basic data types in Java. Char is called "character type" in Java and occupies 2 bytes. A character constant is a character enclosed in single quotes, and what a character constant stores in memory is the sorting position of the character in the Unicode character set, that is, an integer.

Dec 27, 2019 pm 02:58 PM

char java

What does = mean in java?

"=" means assignment, which is an assignment operator that can assign a value to a variable, such as int a = 10; assign the literal 10 to the integer variable a.

Dec 27, 2019 pm 01:54 PM

java

What is the difference between vector and list in java?

The difference: list is one-way, vector is two-way. The iterator in the vector becomes invalid after use, while the iterator in the list can continue to be used after use.

Dec 27, 2019 pm 01:36 PM

java list vector

Detailed analysis of heap memory and stack memory in Java

This article is recommended by the java zero-based introduction column. It analyzes stack memory and heap memory in detail, and introduces the difference between the two. I hope it can help you. Heap memory is used to store objects and arrays in Java, and stack memory is mainly used to execute programs.

Dec 26, 2019 pm 05:40 PM

java analyze Heap memory

What are java constants?

Java constants are fixed values ??in the program, which are data that cannot be changed, such as the number 1, the character "a", floating point number [3.2], etc. In Java, constants include integer constants, floating point constants, and Boolean constants. , character constants, etc.

Dec 26, 2019 pm 05:40 PM

java constant

What is the difference between set and list in java?

The differences between list and set are: list can allow duplicate objects and insert multiple null values, but set does not; list containers are ordered, while set containers are unordered, etc.

Dec 26, 2019 pm 05:19 PM

java list set

In-depth understanding of automatic boxing and unboxing in java

This article is recommended by the java language introduction column. The article provides an in-depth explanation of the knowledge about automatic boxing and unboxing in java through detailed examples. I hope it can help everyone. Boxing converts basic data types into wrapper classes, and unboxing converts wrapper classes into basic data types.

Dec 19, 2019 am 11:55 AM

java Unboxing understand autoboxing

The difference and connection between android and java

The difference between Android and Java is: Android is the operating system of mainstream smartphones, while Java is a development language. From the perspective of job positions, Android is engaged in the direction of mobile Internet, while Java is engaged in development. The connection between the two is: applications on the Android application layer are written in Java, using Java as the development language.

Dec 18, 2019 pm 03:29 PM

android java the difference connect

What is the basic class library in java?

The basic class library in Java refers to a class library provided by Java. When we develop, we can select the classes we need from the basic class library, and then call methods in the classes to implement some functions. For example: [scanner] class, which can read user keyboard input and file input.

Dec 18, 2019 pm 02:58 PM

java Basic class library

what is javaweb development

[javaweb] is the sum of technologies that use Java technology to solve related web and Internet fields. Learning JavaWeb development is to learn to use java and other related technologies to develop web applications with different functions on the browser, and all the functions are summarized in one sentence It's all about processing data.

Dec 18, 2019 pm 01:31 PM

javaweb develop

How to import java files into editor

The method to import java files into the editor is: 1. First open the project list, right-click and select [Import]; 2. Find [general] and select [Import Project]; 3. Then click [Browse] and select the project that needs to be imported. file; 4. Finally, click [Finish].

Dec 18, 2019 pm 01:19 PM

java file import editor

How to pass parameters in java parameters

There are two ways to pass parameters in Java: pass by value, which copies a parameter value into a formal parameter of the subroutine. Call by reference, in which a reference to the parameter (rather than the parameter value) is passed to the subroutine parameter, and in the subroutine, the reference is used to access the actual parameter specified in the call.

Dec 09, 2019 pm 05:01 PM

java transfer parameter

What's in the java package

To better organize classes, Java provides a package mechanism. Packages are containers of classes that separate class namespaces. Five commonly used packages in Java: java.lang.*, java.util.*, java.io.*, java.net.*, java.sql.*.

Dec 09, 2019 pm 04:47 PM

java Bag