How to write an array of java

I'm new to Java. I will describe what I have learned.

1. Array

When carefully arranging one by one


 String[] memo = new String[5];    //Assign 5 arrays to memo variables

 memo[0] = "Daikon radish" ;
 memo[1] = "Carrot" ;
 memo[2] = "Mackerel" ;
 memo[3] = "Lemon" ;
 memo[4] = "Mustard" ;


 String fruits = memo[3] ;     //memo[3]Substitute an array of
 System.out.println( fruits );


(Console execution result)

Lemon

The above abbreviation

 String[] memo = {"Daikon radish","Carrot","Mackerel","Lemon","Mustard"};

 String fruits = memo[0] ;     
 System.out.println( fruits )

2. Description of two-dimensional array

 String[][] animal = {

      {"Eagle","Taka"},
      {"Chinchilla","hamster"},
      {"Parakeet","Pigeon"},
      {"Dachshund","Chihuahua"}

 };


 System.out.println(animal[0][0]);   //Eagle

 System.out.println(animal[0][1]);   //Taka

 System.out.println(animal[1][0]);   //Chinchilla

 System.out.println(animal[1][1]);   //hamster

 System.out.println(animal[2][0]);   //Parakeet

 System.out.println(animal[2][1]);   //Pigeon

 System.out.println(animal[3][0]);   //Dachshund

 System.out.println(animal[3][1]);   //Chihuahua

Instructions for using command line arguments in Eclipse

From the target file, "Execution" → "Execution configuration"

Search for the target file → select

Select "Arguments" and enter the array information in "args" (if there are multiple, put a space)

Note that args is a String type array forcibly (in the case of integers, etc., it is necessary to cast).

int variable= Integer.parseInt(args[0])


 class args {
      public static void main (String[] args) {
	
		String input1 = args[0] ;  //iOS is included
		String input2 = args[1] ;  //Android is included
		String input3 = args[2] ;  //windows are included
		String input4 = args[3] ;  //Mac is in

		System.out.println( input1 );
		
		System.out.println( input2 );
		
		System.out.println( input3 );
		
		System.out.println( input4 );
		
      }
 }

[Beginner] Java basic "array" description

How to write an array of java

1. Array

The above abbreviation

2. Description of two-dimensional array

Instructions for using command line arguments in Eclipse