WALKTHROUGH:TNB Java Tut 50 -"Graphical User Interface GUI" [VIDEO] [SOURCE CODE]

In this walk-through you will create a simple GUI that will use 2 shoInputDialogs and a showMessageDialog to find the sum of two numbers input from the user. 

 

Whats New In This Walk-Through:

• showInputDialog's- A graphical box that users can input data from
• Integer.parseInt - A method used to convert a string number to a int var
• Using showMessageDialog's-A graphical box that can display a message

Step 1. Import javax.swing.JOptionPane:

Step 2. Declare a class and a main method:

Step 3.Create 2 String variable and set them equal to a showInputDialog:

Step 4. Create two int variable and set them equal to the Strings we collected from the user via the showInputDialog (you will need to parse the strings before you can set them equal to a int variable):

Step 5.Create a third int var and set it equal to the sum of int var1 and int var2:

Step 6. Create a showMessageDialog that will display the sum of the two numbers in sentence form:

TNB Java Tut 50 Source Code:

 import javax.swing.JOptionPane;  
 class apples {  
   public static void main(String[] args){  
    String fn = JOptionPane.showInputDialog("Enter first number");  
    String sn = JOptionPane.showInputDialog("Enter second number");  
    int num1 = Integer.parseInt(fn);  
    int num2 = Integer.parseInt(sn);  
    int sum = num1 + num2;  
    JOptionPane.showMessageDialog(null, "The answer is " + sum, "the title", JOptionPane.PLAIN_MESSAGE);  
   }  
 }  

End of Tutorial

I Need YOUR Help!!! ( Java Quiz's)

Tonight I had another idea for another resource to make the series more "compete". Quiz's , yes I mean Quiz's just like you would get in a actual college course and I need the community's help!! If you are currently going through the TNB Java tutorials (1-100) after you watch a video try to come up with a quiz question, make it tough, make it tricky , but make sure its a useful question thats important to know. Im gonna try to start compiling quiz questions and making quizs for every 10 tutorials in the series.


If you submit a question please also tell me which tutorial the answer is in or at least a range of 2 or 3 tutorials of where the answer is around.

WALKTHROUGH:TNB Java Tut 49 -"Inheritance" [VIDEO] [SOURCE CODE]

This is a full walk-through of Java Tutorial 49-"Inheritance" by TheNewBoston.This walk-through includes:

• Embedded Video Tutorial
• Alternative explanation & source code
• Visual Breakdown of the code

In this walk-through you will learn about using the "toString" method, a very useful method used to give any object a default string representation.

Super Classes:Super classes are alot like super stars(celebrity's)that influence us.You might never be Kanye west, but from listening/watching  to him you can inherit some of his talents and beliefs(methods). Think of "super classes" as "super stars" that you're regular classes look up to.

 public class superStarKanyeWest{  
   public void rap(){  
   System.out.println("yo yo yo");  
 }  
   public void makeBeats(){  
   System.out.println("BOOM BOOM shimmy BOOM BOOM");  
 }  
   public void personalPhilosophy(){  
   System.out.println("Shoot for the stars so if you fall you land on a cloud.");  
 } 
   public void politicalBeliefs(){  
   System.out.println("George Bush does not care about black people.");  
 }  
 }  

(Example of a "Super Class")

Joe Nobody is just a normal teenager, he himself has no super powers, but hes a fan of Kanye's and aspires to one day become a world famous rapper.Because Kanye inspires Joe we could say Joe is a extension of what Kanye represents because we are all extensions of the people who inspire us.    

OVERIDE:In the java world because Joe looks up to (extends) Kanye by default he inherits all of Kanyes public methods, but Joe can also overwrite individual methods he disagrees with Kanye about, such as political beliefs.

 

Even thought Joe inherited alot of his talents and qualitys(methods) from studying Kanye, Joe is still unique and can have talents(methods) of his own Kanye doesn't such as knowing how to play the guitar.

 public class joeNobody extends superStarKanyeWest{  
  int age=18;  
     public void playGuitar(){  
    System.out.println("I can play guitar");  
  }  
     public void politicalBeliefs(){  
   System.out.println("All politicians are evil crooks and talking politics just gets people pissed off so I just stay out of that stuff.");  
     }   
 }  

(joeNobody Class)

Bobby is Joes little brother, bobby looks up to Joe.Bobby doesn't even know who Kanye is yet,but Because some of Joes quality's are inherited from Kanye,Bobby inherits the the quality's Joe picked up from Kanye as well as all of Joes unique quality's. 

Because Joe overode Kanyes political beliefs Bobby will share Joes politicalBeliefs.

playBasketball() is a method unique to bobby

 public class bobbyNobody extends joeNobody{  
  int age=15;  
      public void playBasketballGood(){  
    System.out.println("I can shoot 10 for 10 from the free throw line.");  
  }  
 }  

(bobbyNobody Class)

End of Tutorial

WALKTHROUGH:TNB Java Tut 42 -"toString" [VIDEO] [SOURCE CODE]

This is a full walk-through of Java Tutorial 42 by TheNewBoston. Each walk-through includes:

• Embedded Video Tutorial
• Text Transcript of the tutorial broken down into steps.
• Source code
• Visual Breakdown of the code

In this walk-through you will learn about using the "toString" method, a very useful method used to give any object a default string representation.

Step 1.Create a class and name it "stringDinger"

 public class stringDinger {  
 }  

inside of the "stringDinger" class:

Step 2.Create 3 int vars(month, day, year)

  private int month;  
  private int day;  
  private int year;  

Step 3.Create a constructor for the "stringDinger" class that accepts 3 parameters.

 public stringDinger(int m,int d,int y){  

inside of the stringDinger constructor:

Step 4.Set each of the incoming parameters to their corresponding variables:

  month=m;  
   day=d;  
   year=y;  

Step 5.create a print function statement that prints the sentence "the constructor for this is %s\n , this"(note: "using "this" in this case will equal whatever you're "toString" method returns )

  System.out.printf("the constructor for this is %s\n",this);  

end of stringDinger constructor.

Step 6.Create a "toString" method that returns the variables formated like this : "month/day/year":

  public String toString(){  
   return String.format("%d/%d/%d",month,day,year);  
  }  

end of "stringDinger" class

Step 7.Create a new class with a main method, name the class "useTheDinger"

 class useTheDinger{  
  public static void main(String[] args){  
 }  
 }  

inside the  main method of the "useTheDinger" class:

Step 8.Create a stringDinger object with the parameters 4,5,2011

  stringDinger theDingerSpeaks = new stringDinger(4,5,6);  

End of Tutorial

 TNB Java Tut 46 Complete Source Code 


"stringDinger" Class

 public class stringDinger {  
  private int month;  
  private int day;  
  private int year;  
  public stringDinger(int m,int d,int y){  
   month=m;  
   day=d;  
   year=y;  
   System.out.printf("the constructor for this is %s\n",this);  
 }  
  public String toString(){  
   return String.format("%d/%d/%d",month,day,year);  
  }  
 }  

"useTheDinger" Class

 class useTheDinger{  
  public static void main(String[] args){  
   stringDinger theDingerSpeaks = new stringDinger(4,5,6);  
   System.out.println(theDingerSpeaks.toString());  
  }  
 }  

CHALLENGE:Java Tut 36-37-Display Reg Time

The following is a challenge for new developers that have completed:

 Java Tutorial - 36-37 Displaying Regular Time by theNewBoston
 To get the most out of these challenges try them a few hours or the day after watching/following along with the actual video.

 

CHALLENGE!!

(Before starting any of the challenges always declare a class and a main method unless told otherwise)

 Difficulty:★★
 

1.Create a class and name it "Time".Unlike classes we've created in the past you dont need to declare a main method.

2.Create 3 int vars. name them hour, minute, second.

3.Create a method,name it setTime, it should accept 3 parameters(int h, int m , int s)

Inside the setTime method:

• if h is greater than 0 and less than 24 then set h to hour, else set the hour to 0 by default.This should be accomplished in one line of code( Hint:use the "ternary operator" instead of a if statement)

• if m is greater than 0 and less than 60 then set m to minute, else set the minute to 0 by default.(Hint: "ternary operator")

• if s is greater than 0 and less than 60 then set s to second, else set the second to 0 by default.(Hint: "ternary operator")

End "setTime" method 

4.Create another method.Name it toMilitary.

Inside the to Military method:

• Create a return statement that will format the "hour" , "minute" and "second" vars to display in military format.
  
  Example of console output:18:30:00
  End "toMilitary" method

5.Create a method,name it toRegTime

Inside the "toRegTime" method:

• Create a return statement that will format the "hour" , "minute" and "second" vars to display in standard time format. (hint:Ull need to use the Modulus (%) operator
  
  Example of console output:6:30:00 PM

End "toRegTime" method

End of "Time" class

6.Create another class and name it testTime .Create a main method.

Inside the main method of testTime class:

• Declare a new Time object and name it tickTock.

• Print tickTock.toMilitary

• Print tickTock.toRegTime

• Call the setTime method with the parameters (13,27,6)

• Print tickTock.toMilitary

• Print tickTock.toRegTime

End of "testTime" class

COMPILE & PRAY TO DUKE!!!

View the video tutorial: http://bit.ly/qkxfja 

The Secret to Success- [Motivation][Entrepreneurship]

Just a little something to keep my fellow aspiring entrepreneur/developers motivated. Enjoy.

CHALLENGE:Java Tut 35-Var Length Arguments

The following is a challenge for new developers that have completed:

 Java Tutorial - 35 Variable Length Arguments by theNewBoston
 To get the most out of these challenges try them a few hours or the day after watching/following along with the actual video.

 

B.A.M.F Challenge:

B.A.M.F Challenges & why you want to always at leas try them explained Here:http://bit.ly/ogivqe

Difficulty: ★1/3

Create a console program with a method that finds the average of a unknown amount of numbers(aka accepts a variable length argument in its parameters)Then test it in you're main method.

CHALLENGE!!

(Before starting any of the challenges always declare a class and a main method unless told otherwise)

 Difficulty:★
 

1.Create a method that will return a int and name it "average".It should accept a variable length argument, name the variable length argument "numbers"

Inside the "average" method:

2.Declare a int variable, name it total and set it to 0.

3.Create a enhanced for loop that loops through the "numbers" parameter being passed in.

Inside the enhanced for loop:
4.set total+=x;

5.return total divided by the amount of numbers you passed in(hint: numbers.length)

Back in the main method:

6.Create a print line statement that calls the "average" method and place 8 values in its parameters.

COMPILE & PRAY TO DUKE!!!

View the video tutorial: http://bit.ly/qkxfja 

CHALLENGE:Java Tut 32-34-Arrays in Methods & Multidimensional Arrays

The following is a challenge for new developers that have completed:

 Java Tutorial's 32-34 by theNewBoston. To get the most out of these challenges try them a few hours or the day after watching/following along with the actual video.

 

B.A.M.F Challenge:

B.A.M.F Challenges & why you want to always at leas try them explained Here:http://bit.ly/ogivqe

Difficulty: ★★1/2

 Create a java console program with a method that accepts a multidimensional array in its parameters.When the method is called it should print the array out to the console as a table.If you've done everything right you're results should look like this:

This is the the Multi Array

8        9        5          12
55      12        32         22
15       4        39         83

CHALLENGE!!

(Before starting any of the challenges always declare a class and a main method unless told otherwise)

 Difficulty:★2/3

1.Create a multidimensional array. It should have at least 3 arrays inside of it and each array should have several values.

2.Create a method that accepts a multidimensional array in its parameters, name the array in the parameters "x" and name the method "display"[

3.Inside the display method create a for loop, name you're counter "row; loop  through until x.length is less than "row" ; increment by 1

Inside of the "row" for loop insert: [

Another for loop. name you're counter "column"; loop  through until x.length is less than "x[row].length;increment by 1. Inside the "column" for loop insert:

   1.A print line statement that prints  x[row][column] + "\t"]

Print line statement that prints: a blank line] ]

4.In the main method write a print line statement that reads "This is the array table"

5.In the main method call the display method and place you're array in the parameters

Note: I am trying to experiment to find the best way to explain loops in words. Everything that is Orange is inside of the "Row" for loop and everything that is red is inside the "column" for loop. If this made it easier for you to understand or you have some suggestions to improve these challenges leave it in a comment below!!

COMPILE & PRAY TO DUKE!!!

View the video tutorial: http://bit.ly/r9jFZN

WALKTHROUGH:TNB Java Tut 26-Random Number Generator[VIDEO & SOURCE CODE]]

This is a full walkthrough of Java Tutorial 26 by TheNewBoston. Each walkthrough includes:

• Embedded Video Tutorial
• Text Transcript of the tutorial broken down into steps.
• Source code

If you found this walkthrough helpful and want to see more of them please leave a comment and let me know.Im trying alot of new things and still trying to get a feel for what people want more of.You're feedback counts around here!!!

Step 1.Import the Random package

 import java.util.Random;  

Step 2. Declare a new Random variable and name it "dice"

 Random dice=new Random();  

Step 3. Declare a int variable and name it "number"

 int number;  

Step 4. Create a "for" loop that will loop through 10 times before stopping.

 for(int counter =0;counter<10;counter++){  
 }  

Step 5. Inside the for loop:

• Set the number var to equal a random number between 1-6

  number=1+dice.nextInt(6);  

•  Print the random number variable + a space (" ")
  

  System.out.println(number +" ");  

End of Tutorial

 TNB Java Tut 26 Complete Source Code 

 import java.util.Random;  
 class TNBjtut26{  
  public static void main(String[] args){  
 Random dice=new Random();  
 int number;  
 for(int counter =0;counter<10;counter++){  
  number=1+dice.nextInt(6);  
  System.out.println(number +" ");  
 }  
    }  
 }  

Android API Demo - The Best Developer Resource No One Told You About

         Have you ever just wanted a working example of every single little component in Android you can dissect? Yeah, me too. Turns out it exists....and no one told you about it.Shame on every developer/tutorial writer that dint mention these repeatedly to me while I was learning.
        As long as your SDK is all up to date just boot up your emulator , check your app drawer and look for a app called "API Demo" from there you have a working demo of almost every android component you could ever ask for.

Want to play with the code? YOU CAN!!!

Best part is you not only can play with live demos of all this stuff you can actually dissect it too!! Just check out this link and click around till you reach the demo source your looking for.

Android API Demo's:http://bit.ly/pw8TGA  

If you found this post helpful and you want me to keep working like a asian kid in math class to bring you the best Android resources consistently click clack that comment button below and leave me ur opinion or follow the blog!!! It lets me know
you care :)

CHALLENGE:Java Tut 31-Enhanced For Loop

The following is a challenge for new developers that have completed:

 Java Tutorial - 31 Enhanced for loop by theNewBostonTo get the most out of these challenges try them a few hours or the day after watching/following along with the actual video.

 

B.A.M.F Challenge:

B.A.M.F Challenges & why you want to always at leas try them explained Here:http://bit.ly/ogivqe

Difficulty: ★1/3

 Create a enhanced for loop that sums the contents of a array.

CHALLENGE!!

(Before starting any of the challenges always declare a class and a main method unless told otherwise)

 Difficulty:★

1.Create a int array with 8 values.
2.Create a int var , name it total and set it to 0
3.Create a enhanced for loop , set it to you're array. Each time it loops it should:
            *Add a value from the array to the total var
4.Print the total var to the console

COMPILE & PRAY TO DUKE!!!

View the video tutorial: http://bit.ly/n8Z8eM 

CHALLENGE:Java Tut 30-Array Elements As Counters

The following is a challenge for new developers that have completed:

 Java Tutorial - 30 Array Elements As Counters by theNewBoston

 

B.A.M.F Challenge:

B.A.M.F Challenges & why you want to always at leas try them explained Here:http://bit.ly/ogivqe

Difficulty: ★★ 1/2

 Create a java console program using arrays and for loops that simulates a 6 sided die being tossed 1000 times. Then print the amount of times it fell on each side of the die to the console. Your console output should look something like this: 

Face      Frequency

1                182          

2                 220         

3                134          

4                278          

5                169         

6                188          

CHALLENGE!!

(Before starting any of the challenges always declare a class and a main method unless told otherwise)

 Difficulty:★1/2

1.Create a Random variable and name it rand
2.Create a int array that holds 7 int's, name it freq. 
3.Create a for loop that loops 1000 times.Each time it loops it should:

       *++freq[1+rand.nextInt(6)];

4.Below the for loop print a header that reads "Face        Frequency"
5.Create another for loop:
  Start you're "counter" at 1, the loop should continue as long as face is less than the length of the freq array , increment by 1 , each time it loops it should :
                   *Print the index , a few spaces and the value of the index position.(See the example in the                      B.A.M.F example if you're confused.

View the video tutorial: http://bit.ly/nFzFhL 

CHALLENGE:Java Tut 29-Summing Elements of Arrays by theNewBoston

The following is a challenge for new developers that have completed:

 Java Tutorial - 29 Summing Elements of Arrays by theNewBoston

 

B.A.M.F Challenge:

B.A.M.F Challenges & why you want to always at leas try them explained Here:http://bit.ly/ogivqe

Difficulty: ★ 1/2

 Create a java console program that stores 8 numbers between 1-100 in a array and then find the sum of all the numbers combined using a for loop.

CHALLENGE!!

(Before starting any of the challenges always declare a class and a main method unless told otherwise)

Difficulty:★

1.Create a int array that stores 8 int's and name it values
2.Create a int var and name it sum
3.Create a for loop , set the counter to 0 to start, continue looping as long as the counter is less than the length of you're int array, increment the counter by 1 each time it loops.Each time it loops it should:
              * sum+= values[counter]  (sorry guys , couldn't think of a way to explain that part in words)

4.Print the sum.

COMPILE & PRAY TO DUKE The Java God!!!!

View the video tutorial: http://bit.ly/o7iT9P 

CHALLENGE:Java Tut's 27&28-Intro to Arrays

The following is a challenge and or walk-through for new developers that have completed:

Java Tutorial - 27&28 -Introduction to Arrays by theNewBoston
To get the most out of these challenges try them a few hours or the day after watching/following along with the actual video.

 

B.A.M.F Challenge:

B.A.M.F Challenges & why you want to always at leas try them explained Here:http://bit.ly/ogivqe

Difficulty: ★ 1/2

 Create a int array and loop through each entry in a 2 column list .You're results should look like this:

Index     Value

0              18

1               24

2                 8

ect....

_________________________________________________________________________________

CHALLENGE!!

(Before starting any of the challenges always declare a class and a main method unless told otherwise)

 Difficulty:★

1.Create a int array with 5 values of you're choosing.
2.Create a print line statement with the words Index , a few spaces and Values ( like the example in the BAMF challenge above.
3.Create a for loop that will continue to loop until you're counter is greater than the length of the array you created , increment by one. Each time it loops:
                    * Print the Index & Value (hint: use the counter from you're for loop)

View the video tutorial: http://bit.ly/omhcMV 



If this tutorial was helpful for you or you have suggestions as to how I can improve this series please leave a comment below, You're voice will be heard and I will make what ever improvements I can.

CHALLENGE:Java Tut 26-Random Number Generator

The following is a challenge for new developers that have completed:

Intermediate Java Tutorial - 26 -Random Number Generator by theNewBoston

 

B.A.M.F Challenge:

B.A.M.F Challenges & why you want to always at leas try them explained Here:http://bit.ly/ogivqe

Difficulty: ★ 1/2

 Create a java console program that simulates rolling  a standard 6 sided die(the single form of dice)  10 times and print out the results in the console with a space. The results should look something like this:  

3 7 2 2 1 ect... up  to 10

CHALLENGE!!

(Before starting any of the challenges always declare a class and a main method unless told otherwise)

 Difficulty:★

1. Declare a new Random variable and name it "dice"
2. Declare a int variable and name it "number"
3. Create a "for" loop that will loop through 10 times before stopping.
          (hint: initialization; termination; increment
4. Inside the for loop set the number var to equal a random number between 1-6(hint: "dice.")
5.Print the random number variable + a space (" ")
( If you dont add the space when you run it all youre numbers will be in one jumbled line.)

View the video tutorial: http://bit.ly/pLAzeg

Introducing B.A.M.F Challenges

 (B.A.M.F's Make Money Like George Jung From Blow and you will to once you master the art of I2J Translation)

B.A.M.F Challenges are for those of you feeling a little cocky, Instead of giving you step by step directions I will only give you a abstract goal of the challenge and its up to you to figure out how to make it happen.Even if you cant always complete the B.A.M.F challenge, you should always at least try and then move down to the reg challenge if youre struggling.B.A.M.F Challenges help youre brain become what I call a Java "translator" , as in you can listen to a client explain something they want done in simple English and convert it in you're mind to rough Java.Almost every new programmer gets to a point where they can read source code and understand what its doing, but struggle with creating a program from a idea alone without help or alot of research.The end results should still be the same as the regular challenge.

IM BACK!!!

(The best image I could find to represent ADHD)

I started this blog and being the ADHD developer I am I got distracted and kinda abandoned it for a while but, I checked my blog views for the first time today and realized that this blog is still getting daily views, comments and followers a month after I abandoned it. That tells me that there is a serious demand for a blog like this so ive decided to get back at it!!! If you stumble across this blog and you want me to keep going leave me a comment, follow it , link to it...anything to show me that im not doing all this work for nothing.


New Java challenges coming soon!!!