How to Create a Super Hello World Program in Java with Source Code
How to Create a Super Hello World Program in Java with Source Code (Free Java Tutorials and Source Code Examples).
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Screenshot-1:
Java - Super Hello World Program.
Screenshot-2:
Java - Super Hello World Program.
Java EP.1:
Download and Install Java JDK and NetBeans IDE on Windows 10.
YouTube 4K Video (Ultra HD)
https://youtu.be/h6rwRBT0AqA
https://youtu.be/h6rwRBT0AqA
Java EP.2: How to fix: NetBeans IDE.
The default font size used in menus, dialogs, views, etc. is too small.
YouTube 4K Video (Ultra HD)
https://youtu.be/GH-nwmzVlUI
https://youtu.be/GH-nwmzVlUI
Java EP.3:
How to Create a Super Hello World Program in Java.
YouTube Part 1/2
4K Video (Ultra HD)
YouTube Part 2/2
4K Video (Ultra HD)
4K Video (Ultra HD)
[FREE SOURCE CODE by iBASSKUNG]
#BEGIN
package javahelloworld2020;
/**
*
* @author iBasskung
*/
public class JavaHelloWorld2020 {
/**
* @param args the command line arguments
*/
public static void main(String[] args) {
// TODO code application logic here
// Welcome to Java World.
// This is single line comment.
/*
This is multi line comment.
Please like and subscribe to my channel and
press the bell icon to get new video updates.
*/
// Print in the same line using print() Method.
System.out.print("Begin: ");
System.out.print("Java Tutorial for Beginners.");
System.out.println(""); // Empty line.
System.out.println("How to Create the Super Hello World Program.");
System.out.println(""); // Empty line.
// Note:
// println() Method moves the cursor down to the next line
// after displaying the message.
// Declaring string variable.
String hello;
// Initializing string variable that's already been declared.
hello = "Hello, World!";
// Declaring and initializing string at one time.
String happy = "Happy New Year";
// Declaring and initializing an integer.
int myIntYear = 2020;
// Convert integer to string.
String myStringYear = String.valueOf(myIntYear);
// Print to the Output Window.
System.out.println(hello + " " + happy + " " + myStringYear + ".");
// Note: Concatenation using + operator.
System.out.println(""); // Empty line.
// Next: Java Array!
// Declaring an array of strings.
String[] strArr;
// Allocating memory for 2 strings.
strArr = new String[2];
// Initialize the first elements of the array.
strArr[0] = "Old Year";
// Initialize the second elements of the array.
strArr[1] = "New Year"; // Sorry :)
// Print to the Output Window.
System.out.println("Goodbye " + strArr[0] + ", Hello " + strArr[1] + ".");
// Declaring and initializing an array of integers.
int[] intArr = new int[] {2018, 2019, 2020, 2021, 2022};
// Note: Array length = 5, first index = 0, last index = 4
// Accessing Java Array elements via its index.
int oldYear = intArr[1];
int newYear = intArr[2];
// Note: index 0: 2018, index 1: 2019, index 2: 2020 and so on...
// Print to the Output Window.
System.out.println("Goodbye " + oldYear + ", Hello " + newYear + ".\n");
// Note: Using escape sequence (\n) to print new line.
// Keyboard Shortcut.
// Type sout then press TAB.
System.out.println("'sout' : \"NetBeans IDE 8.0\" \'Keyboard Shortcut\'\n");
// Type Sys then press Ctrl + SPACE after that press ENTER.
System.out.println("Facebook Pages:");
// Declaring and initializing a string array.
String[] arrPage = new String[] {"Code A Minute.", "iBasskung Tutorial.", "Code with iBasskung."};
// Check if an array is empty or not
// using if..else..if Statement.
if(arrPage == null){
System.out.println("The array is null.");
}else if(arrPage.length == 0){
System.out.println("The array is empty.");
}else{
// Finding array length using length() Method.
System.out.println("The length of the arrPage is " + arrPage.length + ".\n");
// Loop through an array of strings using for loop.
for(int i = 0; i < arrPage.length; i++){
// Print the result to the screen.
System.out.println((i + 1) + "." + arrPage[i]);
}
}
System.out.println(""); // Empty line.
System.out.println("YouTube Channels:");
// Declaring and initializing a string array.
String[] arrYouTube = {"iBasskung.", "iBasskung Tutorial.", "Tanin Sangngam."};
// Note:
// There is no need to write the new String[] part in the lates versions of Java.
System.out.println("The length of the arrYouTube is " + arrYouTube.length + ".\n");
// Loop through an array of strings using enhanced for loop (for each loop).
int no = 0;
for (String item : arrYouTube){
no++;
System.out.println(no + "." + item);
}
System.out.println(""); // New line.
System.out.println("Thanks so much for watching. Please subscribe to my channel.");
}
}
/**
*
* @author iBasskung
*/
public class JavaHelloWorld2020 {
/**
* @param args the command line arguments
*/
public static void main(String[] args) {
// TODO code application logic here
// Welcome to Java World.
// This is single line comment.
/*
This is multi line comment.
Please like and subscribe to my channel and
press the bell icon to get new video updates.
*/
// Print in the same line using print() Method.
System.out.print("Begin: ");
System.out.print("Java Tutorial for Beginners.");
System.out.println(""); // Empty line.
System.out.println("How to Create the Super Hello World Program.");
System.out.println(""); // Empty line.
// Note:
// println() Method moves the cursor down to the next line
// after displaying the message.
// Declaring string variable.
String hello;
// Initializing string variable that's already been declared.
hello = "Hello, World!";
// Declaring and initializing string at one time.
String happy = "Happy New Year";
// Declaring and initializing an integer.
int myIntYear = 2020;
// Convert integer to string.
String myStringYear = String.valueOf(myIntYear);
// Print to the Output Window.
System.out.println(hello + " " + happy + " " + myStringYear + ".");
// Note: Concatenation using + operator.
System.out.println(""); // Empty line.
// Next: Java Array!
// Declaring an array of strings.
String[] strArr;
// Allocating memory for 2 strings.
strArr = new String[2];
// Initialize the first elements of the array.
strArr[0] = "Old Year";
// Initialize the second elements of the array.
strArr[1] = "New Year"; // Sorry :)
// Print to the Output Window.
System.out.println("Goodbye " + strArr[0] + ", Hello " + strArr[1] + ".");
// Declaring and initializing an array of integers.
int[] intArr = new int[] {2018, 2019, 2020, 2021, 2022};
// Note: Array length = 5, first index = 0, last index = 4
// Accessing Java Array elements via its index.
int oldYear = intArr[1];
int newYear = intArr[2];
// Note: index 0: 2018, index 1: 2019, index 2: 2020 and so on...
// Print to the Output Window.
System.out.println("Goodbye " + oldYear + ", Hello " + newYear + ".\n");
// Note: Using escape sequence (\n) to print new line.
// Keyboard Shortcut.
// Type sout then press TAB.
System.out.println("'sout' : \"NetBeans IDE 8.0\" \'Keyboard Shortcut\'\n");
// Type Sys then press Ctrl + SPACE after that press ENTER.
System.out.println("Facebook Pages:");
// Declaring and initializing a string array.
String[] arrPage = new String[] {"Code A Minute.", "iBasskung Tutorial.", "Code with iBasskung."};
// Check if an array is empty or not
// using if..else..if Statement.
if(arrPage == null){
System.out.println("The array is null.");
}else if(arrPage.length == 0){
System.out.println("The array is empty.");
}else{
// Finding array length using length() Method.
System.out.println("The length of the arrPage is " + arrPage.length + ".\n");
// Loop through an array of strings using for loop.
for(int i = 0; i < arrPage.length; i++){
// Print the result to the screen.
System.out.println((i + 1) + "." + arrPage[i]);
}
}
System.out.println(""); // Empty line.
System.out.println("YouTube Channels:");
// Declaring and initializing a string array.
String[] arrYouTube = {"iBasskung.", "iBasskung Tutorial.", "Tanin Sangngam."};
// Note:
// There is no need to write the new String[] part in the lates versions of Java.
System.out.println("The length of the arrYouTube is " + arrYouTube.length + ".\n");
// Loop through an array of strings using enhanced for loop (for each loop).
int no = 0;
for (String item : arrYouTube){
no++;
System.out.println(no + "." + item);
}
System.out.println(""); // New line.
System.out.println("Thanks so much for watching. Please subscribe to my channel.");
}
}
#END
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#Java #JDK #NetBeans #HelloWorld #SuperHelloWorld
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