Home Java javaTutorial What does false mean in java

What does false mean in java

May 01, 2024 pm 05:33 PM

In Java, false indicates that the logical value is no, which is complementary to true, indicating that the logical value is yes. This Boolean value is used in conditional statements (such as if-else) and logical operators to determine code execution.

What does false mean in java

#What does false mean in Java?

In Java, false is a Boolean value, indicating that the logical value is no. It is complementary to true and represents a logical value of yes.

Boolean type

The Boolean type is a primitive type in Java, used to represent Boolean values. It has only two possible values: true or false.

Using false

The false value is often used in conditional statements, such as if-else statements or while loops, to determine whether to execute a block of code. For example:

if (age < 18) {
    // 未成年
} else {
    // 成年
}
Copy after login

In the above example, if the age variable is less than 18, the first code block is executed, otherwise the second code block is executed.

Other uses

In addition to conditional statements, the false value can also be used in other situations:

  • As the result of a logical operator, For example, AND, OR and NOT
  • as part of a conditional expression, such as the ternary operator
  • as a placeholder for an array or list to represent non-existent or invalid values ​​

Note:

  • false is a keyword and cannot be used as a variable name or method name.
  • In Java, false and FALSE are the same, but it is generally recommended to use all lowercase false.

The above is the detailed content of What does false mean in java. For more information, please follow other related articles on the PHP Chinese website!

Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

Video Face Swap

Video Face Swap

Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Tools

Notepad++7.3.1

Notepad++7.3.1

Easy-to-use and free code editor

SublimeText3 Chinese version

SublimeText3 Chinese version

Chinese version, very easy to use

Zend Studio 13.0.1

Zend Studio 13.0.1

Powerful PHP integrated development environment

Dreamweaver CS6

Dreamweaver CS6

Visual web development tools

SublimeText3 Mac version

SublimeText3 Mac version

God-level code editing software (SublimeText3)

Is the company's security software causing the application to fail to run? How to troubleshoot and solve it? Is the company's security software causing the application to fail to run? How to troubleshoot and solve it? Apr 19, 2025 pm 04:51 PM

Troubleshooting and solutions to the company's security software that causes some applications to not function properly. Many companies will deploy security software in order to ensure internal network security. ...

How to simplify field mapping issues in system docking using MapStruct? How to simplify field mapping issues in system docking using MapStruct? Apr 19, 2025 pm 06:21 PM

Field mapping processing in system docking often encounters a difficult problem when performing system docking: how to effectively map the interface fields of system A...

How to elegantly obtain entity class variable names to build database query conditions? How to elegantly obtain entity class variable names to build database query conditions? Apr 19, 2025 pm 11:42 PM

When using MyBatis-Plus or other ORM frameworks for database operations, it is often necessary to construct query conditions based on the attribute name of the entity class. If you manually every time...

How does IntelliJ IDEA identify the port number of a Spring Boot project without outputting a log? How does IntelliJ IDEA identify the port number of a Spring Boot project without outputting a log? Apr 19, 2025 pm 11:45 PM

Start Spring using IntelliJIDEAUltimate version...

How do I convert names to numbers to implement sorting and maintain consistency in groups? How do I convert names to numbers to implement sorting and maintain consistency in groups? Apr 19, 2025 pm 11:30 PM

Solutions to convert names to numbers to implement sorting In many application scenarios, users may need to sort in groups, especially in one...

How to elegantly get entity class variable name building query conditions when using TKMyBatis for database query? How to elegantly get entity class variable name building query conditions when using TKMyBatis for database query? Apr 19, 2025 pm 09:51 PM

When using TKMyBatis for database queries, how to gracefully get entity class variable names to build query conditions is a common problem. This article will pin...

How to safely convert Java objects to arrays? How to safely convert Java objects to arrays? Apr 19, 2025 pm 11:33 PM

Conversion of Java Objects and Arrays: In-depth discussion of the risks and correct methods of cast type conversion Many Java beginners will encounter the conversion of an object into an array...

E-commerce platform SKU and SPU database design: How to take into account both user-defined attributes and attributeless products? E-commerce platform SKU and SPU database design: How to take into account both user-defined attributes and attributeless products? Apr 19, 2025 pm 11:27 PM

Detailed explanation of the design of SKU and SPU tables on e-commerce platforms This article will discuss the database design issues of SKU and SPU in e-commerce platforms, especially how to deal with user-defined sales...

See all articles