One Commit at a Time ! Series - 25

#programming #productivity #100daysofcode #day25

JAVA

public class Main {
  public static void main(String[] args) {
    int x = 5;
    System.out.println(x);
  }
}

Explanation :

1. The Class Definition

public class Main {

public class Main: In Java, every program must be enclosed in a class. This defines a public class named Main. By convention, the name of the main class usually matches the filename (Main.java).

2. The Main Method

  public static void main(String[] args) {

public static void main(String[] args): This is the entry point of any standalone Java application. The Java runtime always looks for this exact method signature to start running the program.
public: Means this method can be accessed from outside the class.
static: Means the method belongs to the class itself, rather than an instance of the class, so Java can call it without creating an object.
void: Means this method does not return any value.
String[] args: This is an array that can store command-line arguments passed to the program.

3. Variable Declaration and Assignment

    int x = 5;

int x = 5;: This declares a variable named x of type int (integer, meaning whole numbers) and assigns it the value 5.

4. Printing to the Console

    System.out.println(x);

System.out.println(x);: This tells Java to print the value stored in the variable x to the console, followed by a new line.

Output

When you run this program, the console will display:

SQL

The WHERE clause can contain one or many AND operators.

The AND operator is used to filter records based on more than one condition.

Note: The AND operator displays a record if all the conditions are TRUE.

The following SQL selects all customers from Spain that starts with the letter 'G':

Example

Select all customers where Country is "Spain" AND CustomerName starts with the letter 'G':
SELECT *
FROM Customers
WHERE Country = 'Spain' AND CustomerName LIKE 'G%';

References :
https://www.w3schools.com/sql/sql_and.asp
https://www.w3schools.com/java/tryjava.asp?filename=demo_oper_ass1

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