Difference Between JDK (Java Development Kit),JRE (Java Runtime Environment) & JVM (Java Virtual Machine) In Tabular Form
| S.NO | BASIC TERMS | JDK | JRE | JVM |
| 1. | FULL FORM | Java Development Kit | Java Runtime Environment | Java Virtual Machine |
| 2. | PLAT FORM | Java | Java | java |
| 3. | DEFINITION | The Java Development Kit (JDK) is a software development environment that you can use to develop and execute Java applications. It includes the JRE and a set of programming tools, such as a Java compiler, interpreter, appletviewer, and document viewer. The JDK is implemented through the Java SE, Java EE, or Java ME platforms. | The Java Runtime Environment (JRE) is a part of the JDK that includes a JVM, core classes, and several libraries that support application development. Though the JRE is available as part of the JDK, you can also download and use it separately. | Java Virtual Machine (JVM) is a run-time system that executes Java bytecode. The JVM is like a virtual computer that can execute a set of compiled instructions and manipulate memory locations. When a Java compiler compiles source code, it generates a highly optimized set of instructions called bytecode in a .class file. The JVM interprets these bytecode instructions and converts them to machine-specific code for execution. |
| 4. | DEVELOPMENT PURPOSE | Yes | No | No |
| 5. | RUNNING THE JAVA PROGRAMS | No | Yes | No |
| 6. | PROVIDES PLATFORM INDEPENDENCE | No | no | Yes |
| 7. | TOOLS | JDK contains tools for developing, debugging and monitoring java application. | JRE does not contain tools such as compiler or debugger etc. Rather it contains class libraries and other supporting files that JVM requires to run the program. | JVM does not include software development tools |
| 8. | LOCATION | It is the superset of JRE. | It is the subset of JDK | JVM contains in JRE,or we can say it is subset of JRE |
| 9. | SPACE | JDK needs more disk space as it contains JRE along with various development tools. | JRE is smaller than JDK so it needs less disk space. | |
| 10. | COMBINATION OF. | JDK = Java Runtime Environment (JRE) + Development tools | JRE = Java Virtual Machine (JVM) + Libraries to run the application | Only Runtime environment for executing the Java bytecode |
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