Reserved Word

Reserved words:In java some identifiers are reserved to associate some functionality or meaning such type of reserved identifiers are called reserved words.

Reserved words for data types:

1) byte
2) short
3) int
4) long
5) float
6) double
7) char
8) boolean

Reserved words for flow control:

1) if
2) else
3) switch
4) case
5) default
6) for
7) do
8) while
9) break
10) continue
11) return

Keywords for modifiers:

1) public
2) private
3) protected
4) static
5) final
6) abstract
7) synchronized
8) native
9) strictfp(1.2 version)
10) transient
11) volatile

Keywords for exception handling:

1) try
2) catch
3) finally
4) throw
5) throws
6) assert(1.4 version)

Class related keywords:

1) class
2) package
3) import
4) extends
5) implements
6) interface

Object related keywords:

1) new
2) instanceof
3) super
4) this

Void return type keyword:

If a method won’t return anything compulsory that method should be declared with the void return type in java but it is optional in C++.

1) void

Unused keywords:

goto: Create several problems in old languages and hence it is banned in java.

Const: Use final instead of this. By mistake if we are using these keywords in our program we will get compile time error.

Reserved literals:

1) true values for boolean data type.
2) false
3) null----------------- default value for object reference.
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