Command line arguments programs in Java
Title: To study the fundamentals of java programming and implement programs based on it.
1) Write a program to find if a year value is leap year or not.
2) Write a program to find largest of three numbers using a ternary operator.
3) Write a program to check if the given number is Armstrong number or not.
4) Write a program to print the following pattern on screen:
1
2 1
3 2 1
4 3 2 1
Command line arguments in Java are a way to pass information into a program when you run it. These arguments are passed as a string array to the main method.
public static void main(String[] args): The main method is the entry point of the program. The args parameter is an array of String objects that contains the command line arguments.
args.length: This gives the number of command line arguments passed.
for (String arg : args): This loop iterates over each command line argument and prints it.
Java-Loop Control
Looping statement are the statements execute one or more statement repeatedly several number of times. In java programming language there are three types of loops; while, for and do-while.
Why use loop?
When you need to execute a block of code several number of times then you need to use looping concept in Java language.
Advantage with looping statement
Reduce length of Code
Take less memory space.
Burden on the developer is reducing.
Time consuming process to execute the program is reduced.
Try this quiz:-
1) What does JDK stand for?
Java Developer Kit
Java Deployment Kit
Java Design Kit
Java Discovery Kit
2) Java is platform independent.
True
False
Not every time
3)A file containing java bytecode has ________ extension.
class
java
byte
bin
4)Which of the following statements is/are correct?
Java is purely object oriented programming language.
Java doesn't support pointers.
Java supports multithreading.
Java programs can't be executed on Linux based platform.
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