Java

Cocepts

100

public static void main(String[] args)

Syntax for java main method

200

Java Runtime Environment

to run java code

Operators

100

>>>

The left operands value is moved right by the number of bits specified by the right operand and shifted values are filled up with zeros.

200

final

can be overridden by subclasse

Method

100

static method

What method can be invoked without the need for creating an instance of a classis

200

final

can be overridden by subclasse

multithread

100

join

method waits for a thread to die.

200

Synchronized block

is used to lock an object for any shared resource

Package

100

import pkg.*

importing an entire package ‘pkg

200

java.lang

Java package is automatically imported into every Java program