[Java] Declare and initialize an array

Declare an array

-Define the data type -Define variable names

//Data type=String, variable name=array
String[] array;

Initialize the array

-Define the number of elements

//Element count=3
String[] array = new String[3];

Initialize by packing data in an array as an element

・ No need to define the number of elements -Define elements that match the data type

//Element 0="a", Element 1="b", Element 2="c"
String[] array = {"a","b","c"};

Recommended Posts

[Java] Declare and initialize an array
How to initialize Java array
[Java] array
Java array
Java array
Java learning memo (creating an array)
java (array)
Java array
[Java] Array
Java array
[Java] Difference between array and ArrayList
java array
[Java] Array
Note No. 1 "Counting and displaying duplicate values in an array" [Java]
[Java] Shallow copy and deep copy when converting an array to List
Map without using an array in java
Compare the elements of an array (Java)
java array variable
Java and JavaScript
XXE and Java
[Java] Understand in 10 minutes! Associative array and HashMap
[Java] Get a random value from an array
[Java] Program example to get the maximum and minimum values from an array
Getters and setters (Java)
Solving with Ruby and Java AtCoder ABC129 D 2D array
[Java] Thread and Runnable
Java true and false
[java] throw an exception
[Java] String comparison and && and ||
About Java Array List
[Java] Initialize, add, get
[Java ~ Array ~] Study memo 4
Java --Serialization and Deserialization
[Java] Arguments and parameters
timedatectl and Java TimeZone
[Java] Branch and repeat
Gzip-compress byte array in Java and output to file
[Java] Variables and types
java (classes and instances)
[Java] Overload and override
A program (Java) that outputs the sum of odd and even numbers in an array
[Java] Precautions when converting variable-length argument parameters into an array
Getting started with Java and creating an AsciiDoc editor with JavaFX
Java beginners briefly summarized the behavior of Array and ArrayList
What happened in "Java 8 to Java 11" and how to build an environment
Get attributes and values from an XML file in Java
[Java] A class is an OS, and an instance is a virtual computer.
Generate AWS Signature V4 in Java and request an API
Generate Stream from an array of primitive types in Java
Study Java # 2 (\ mark and operator)
[Java] List type / Array type conversion
Java version 8 and later features
About an instance of java
[Java] Difference between == and equals
[Java] Stack area and static area
[Java] Generics classes and generics methods
Java programming (variables and data)
Java encryption and decryption PDF
Java and Iterator Part 1 External Iterator
Java if and switch statements
Java class definition and instantiation