Welcome to the Lecture Series on “Introduction to Programming With Java”

Structure of Java programs Input and output to screen with Java program Statements Conditional statements Loop constructs Arrays, character and string handling Functions (if time permits) Syllabus

1.Java 2: The Complete Reference – Patrick Naughton, Herbert Schildt 2.Thinking in Java ( – Bruce Eckel 3. Richard G Baldwin’s “Introductory Java Programming Tutorial” on: Books & References

Structure of Java programs Compiling and running the program Printing messages to the screen Contents for Today’s Lecture

Some Basics Q. What is a program? Ans. A sequence of instructions that a computer can interpret and execute. Q. Why Java and not Hindi / Marathi / English? Ans. Since, so far, computer is not intelligent enough to understand natural languages.

class class-name { public static void main(String args[]) { statement1; statement2; … } Structure of Java Programs

“First.java” class First { public static void main(String args[]) { System.out.println(“Hello World”); } Example Program

Compiling: is the process of translating source code written in a particular programming language into computer-readable machine code that can be executed. $ javac First.java This command will produce a file ‘First.class’, which is used for running the program with the command ‘java’. Running: is the process of executing program on a computer. $ java First Compiling & Running the Program

1.System.out.println(“Hello World”); – outputs the string “Hello World” followed by a new line on the screen. 2.System.out.print(“Hello World”); - outputs the string “Hello World” on the screen. This string is not followed by a new line. 3.Some Escape Sequence – \n – stands for new line character \t – stands for tab character About Printing on the Screen

Some common errors in the initial phase of learning programming: - Mismatch of parentheses - Missing ‘;’ at the end of statement - Case sensitivity The best way to learn programming is writing a lot of programs on your own. Some Tips About Programming

1.Write a program which prints the following information about at least 5 persons: NAME MAIL-ID EMPLOYEE-CODE PHONE Eg. Umesh p03161 Salil p03160 Each entry should be on a separate line. 2.Write a program that prints the following line on the screen along with quotes. “Can we print ‘\’ with System.out.println() statement?” Some Assignments

Thank you… End