Java Development Tools (JDT) are essential software applications that help developers create, debug, and manage Java applications. These tools include Integrated Development Environments (IDEs) like Eclipse and IntelliJ IDEA, which provide features such as code editing, syntax highlighting, and project management. They streamline the development process, making it easier to write and test Java code. Additionally, JDT encompasses build tools like Apache Maven and Gradle, which automate the process of compiling code and managing dependencies. These tools ensure that developers can efficiently handle libraries and frameworks, allowing for smoother project workflows and better collaboration among team members.