KwickClips Java · 47 sec · free
Which contains which?
Short answer. The JDK contains the JRE, and the JRE contains the JVM.
What should a programmer install?
The JDK.
One inside another
| Name | Has | Job |
|---|---|---|
| JVM | engine | runs code |
| JRE | JVM + libs | runs apps |
| JDK | JRE + javac | builds apps |
Remember
| JDK has JRE |
| JRE has JVM |
| Programmers install the JDK |
Three names, one confused student. Let us fix it. Here is the order. J V M runs bytecode. J R E adds libraries. J D K adds the compiler. J D K has J R E. J R E has J V M. Install the J D K.
This clip is from the full lesson: Introduction to Java: Features, JVM, Bytecode and Your First Program — 8 minutes, with the tables, the quick answers and the whole lesson in text.
Useful for: CBSE Class 11 Information Technology (802), CBSE Class 12 Information Technology (802), ICSE Class 9 Computer Applications, ICSE Class 9 Computer Applications
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