Quiz on Java

Compile time polymorphism

Execution time polymorphism

Multiple polymorphism

Multilevel polymorphism

JVM

JDK

JIT

JRE

java Filename.java

javac Filename

javac Filename.java

java Filename

JVM

JDK

JIT

JRE

/** Comment 1 */

*/ Comment 2 /*

// Comment 3

/* Comment 4 */

.java.

.javac.

.src.

.class.

After the first character, you may use the letters a-z, A-Z, an underscore, a dollar sign, or digits 0-9.

Identifiers can contain spaces.

Uppercase and lowercase characters are distinct.

The first character must be one of the letters a-z, A-Z, an underscore or a dollar sign.

System.out.println("Hello, world");

System Print = "Hello, world";

SystemOutPrintln('Hello, world');

system.out.println{Hello, world};

Oracle

Microsoft

Google

Apple

Intel

James Gosling

Sergey Brin

Steve Jobs

Bill Gates

Tim Berners-Lee