What are the Java keywords?
Java Language Keywords
| abstract | continue | for |
|---|---|---|
| catch | extends | int |
| char | final | interface |
| class | finally | long |
| const * | float | native |
What is main () in Java?
The main() is the starting point for JVM to start execution of a Java program. Without the main() method, JVM will not execute the program. The syntax of the main() method is: public: It is an access specifier.
How many keywords are in CPP?
Keywords in C++ are the collection of reserved words. These are written in lower cases and have a special meaning defined by the compiler. There are a total of 95 keywords in C++ and out of which around 30 keywords are not available in the C language.
What type is 0 in Java?
int
Default Values
| Data Type | Default Value (for fields) |
|---|---|
| int | 0 |
| long | 0L |
| float | 0.0f |
| double | 0.0d |
How big is a float?
4 bytes
Windows 64-bit applications
| Name | Length |
|---|---|
| float | 4 bytes |
| double | 8 bytes |
| long double | 8 bytes |
| pointer | 8 bytes Note that all pointers are 8 bytes. |
How many keywords are there in C++ and Java?
There are a total of 95 keywords in C++ and out of which around 30 keywords are not available in the C language. Keywords are always used for a special purpose in a program but we can’t use them as variable names or function names.
Why integer is 4 bytes in Java?
The fact that an int uses a fixed number of bytes (such as 4) is a compiler/CPU efficiency and limitation, designed to make common integer operations fast and efficient.