Java Language Interview Question and Answers
1. |
What is Java? |
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A high-level programming language developed by Sun Microsystems. Java was originally called OAK, and was designed for handheld devices and set-top boxes. Oak was unsuccessful so in 1995 Sun changed the name to Java and modified the language to take advantage of the burgeoning World Wide Web. |
2. |
What are the main features of java? |
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The main features of java are - Compiled and Interpreted
- Object oriented
- Robust and secure
- Type safe
- High Performance.
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3. |
What are pass by reference and passby value? |
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- Pass By Reference means the passing the address itself rather than passing the value.
- Passby Value means passing a copy of the value to be passed.
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4. |
What is the Java API? |
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The Java API is a large collection of ready-made software components that provide many useful capabilities, such as graphical user interface (GUI) widgets. |
5. |
What is the Java Virtual Machine (JVM)? |
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The Java Virtual Machine is software that can be ported onto various hardware-based platforms. |
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