Shallow vs Deep copy in Java
When creating copies of arrays or objects one can make a deep copy or a shallow copy. Shallow Copy Output In above example we have changed the value of arr1[2] to 10. Since it’s...
Category: Data Types, Variables, and Arrays
Data Types, Variables, and Arrays
command line arguments in java
It is possible to pass some values from the command line to your Java programs when they are executed. These values are called command line arguments and many times they are important for your...
toString() Metod in Java
If you want to represent any object as a string, toString() method comes into existence. The toString() method returns the string representation of the object. If you print any object, java compiler internally invokes...
Java – isDigit() Method
The method determines whether the specified char value is a digit. It has the following syntax : Example Output
Arrays
An array is simply a sequence of either objects or primitives that are all the same type and are packaged together under one identifier name. Arrays are defined and used with the square-brackets indexing...
Type Casting
There are some conditions where we have to convert one data type to the other data type. In programming languages these conversions are referred to as Type Casting. Java type casting can be classified...
Variables
Variables are the basic entities in a program that are used to identify different values. A variable can be declared as : type variable-name; Initialize a variable When declaring two or more variables of...
Literals
In Java, literals refer to fixed values that are represented in their human-readable form For example, the number 100 is a literal. Literals are also commonly called constants. Below is the basic Java literals...
Java – Basic Data Types
Integers Java defines four integer types: byte, short, int, and long. Type Width in Bits Range byte 8 –128 to 127 short 16 –32,768 to 32,767 int 32 –2,147,483,648 to 2,147,483,647 long 64 –9,223,372,036,854,775,808...