sankaa

Exception Handling in java

Exception Handling: The Exception Handling in Java is one of the powerful mechanism to handle the runtime errors(such as ClassNotFoundException, IOException, SQLException, RemoteException, etc.) so that the normal flow of the application can be maintained. Exception: Exception is an unwanted or unexpected event, which occurs during the execution of a program, i.e. at run time, that disrupts the normal…

Santhiya Govindarajan

6th Nov 2022

JAVA

public static void main(String[] args) – Java main method

In Java programs, the point from where the program starts its execution or simply the entry point of Java programs is the main() method. Why is the main method so important? The Java compiler or JVM looks for the main method when it starts executing a Java program. The signature of the main method needs to be in a specific…

Santhiya Govindarajan

3rd Nov 2022

JAVA

Daemon Thread, Execution Process by JVM, Explanation of public static void main(String[] args), Importance of main method, JNI, main() method is written without String args[]

oops scenario programs

Scenario #1: Expected Understanding: Access Modifiers, Single Inheritance, getter methods, Constructor Overloading 1) Create a Class named “Trainer” with main method. – Have default instance variables String dept, institute – Assign values – “Java”, “Payilagam” to them – Have private instance variable int salary – Assign 10000 as value for salary. – Create getter method…

Santhiya Govindarajan

1st Nov 2022

Java program

oops scenario programs

sql day-1

How to install postgresql in terminal? sql basics:

Santhiya Govindarajan

30th Oct 2022

SQL

How to install postgresql in terminal?, sql basics

sql (day2)

create database: example: create database students; Rename database: example: alter database “students” rename to “school”; Create database using primary key: example: create database students(s_id serial primary key,name varchar(20) not null); Add column: example: alter table students add column department varchar(20); Insert table: There are two types to insert table.There are: Type 1: example: insert into…

Santhiya Govindarajan

30th Oct 2022

SQL

add column in sql, create database in sql, create database table in terminal by text editor, create database table in text editor by terminal, drop table in sql, insert table in sql, primary key in sql, rename database in sql, truncate table in sql, where keyword in sql

System.out.println() in Java

What Is System Out Println in Java? To define System.out.println() in Java, it is a simple statement that prints any argument you pass and adds a new line after it. (System.out.println is a Java statement that prints the argument passed, into the System.out which is generally stdout. System is a class in the java.lang package . The out is…

Santhiya Govindarajan

26th Oct 2022

JAVA

difference between println() and print(), system.out.print, system.out.println

Program

int[] ar= {10,20,30,40,50};int temp=ar[0];

Santhiya Govindarajan

22nd Oct 2022

Java program

Pattern program2

Santhiya Govindarajan

20th Oct 2022

Java program

pattern program

Array and it types

Array: An array in Java is a group of like-typed variables referred to by a common name.To declare an array, define the variable type with square brackets . Following are some important points about Java arrays. An array can contain primitives (int, char, etc.) and object (or non-primitive) references of a class depending on the definition of…

Santhiya Govindarajan

18th Oct 2022

JAVA

array, types of array

Flowchart

1.Palindrome: 2.Addiion of digits: 3.Count of digits: 4.Armstrong: 5.Decimal to binary: 6.Binary to decimal: 7.Prime number: 8.Least common multiple: 9.Greatest common divisor: 10.Fibonacci series:

Santhiya Govindarajan

17th Oct 2022

JAVA

flowchart