Pattern Programs in Java

---

Pattern 1

---

class Pattern1
{
    public static void main(String args[])
    {
		int r = 5;
        for (int m = 1; m <= r; m++)
        {
            for (int n = 1; n <= m; n++)
            {
                System.out.print(n + " ");
            }
            System.out.println();
        }
    }
}

Output

1
1 2
1 2 3
1 2 3 4
1 2 3 4 5

Pattern 2

---

class Pattern2
{
    public static void main(String args[])
    {
	int alpha = 65;
	int r = 5;
        for (int m = 1; m <= r; m++)
        {
            for (int n = 1; n <= m; n++)
            {
                System.out.print((char)(alpha + n -1) + " ");
            }
            System.out.println();
        }
    }
}

Output

A
A B
A B C
A B C D
A B C D E

Pattern 3

---

class Pattern3
{
    public static void main(String args[])
    {
	int r = 5;
        for (int m = 1; m <= r; m++)
        {
            for (int n = 1; n <= m; n++)
            {
                System.out.print("* ");
            }
            System.out.println();
        }
    }
}

Output

*
* *
* * *
* * * *
* * * * *

Pattern 4

---

class Pattern4
{
    public static void main(String args[])
    {
	int r = 5;
        for (int m = 1; m <= r; m++)
        {
            for (int n = 1; n <= m; n++)
            {
                System.out.print(m + " ");
            }
            System.out.println();
        }
    }
}

Output

1
2 2
3 3 3
4 4 4 4
5 5 5 5 5

Pattern 5

---

class Pattern5
{
    public static void main(String args[])
    {
	int alpha = 65;
	int r = 5;
        for (int m = 1; m <= r; m++)
        {
            for (int n = 1; n <= m; n++)
            {
                System.out.print((char)(alpha + m -1) + " ");
            }
            System.out.println();
        }
    }
}

Output

A
B B
C C C
D D D D
E E E E E

Pattern 6

---

class Pattern6
{
	public static void main(String args[])
	{
		int r = 5;
		for (int m = 1; m <= r; m++) 
		{ 
                        for (int n = r; n > m; n--)
			{
				System.out.print("  ");
			}
 
			for (int p = 1; p <= m; p++)
			{
				System.out.print("* ");
			}
			System.out.println();
		}
	}
}

Output

        *
      * *
    * * *
  * * * *
* * * * *

Pattern 7

---

class Pattern7
{
	public static void main(String args[])
	{
		int rows = 5;
		for (int m = 1; m <= rows; m++) 
                { 
                      for (int n = rows; n > m; n--)
			{
				System.out.print(" ");
			}
			for (int p = 1; p <= m; p++)
			{
				System.out.print(p + " ");
			}
			System.out.println();
		}
	}
}

Output

    1
   1 2
  1 2 3
 1 2 3 4
1 2 3 4 5

Pattern 8

---

class Pattern8
{
	public static void main(String args[])
	{
		int r = 5;
		for (int m = r; m >= 1; m--)
		{
			for (int n = 1; n < m; n++)
			{
				System.out.print(" ");
			}
			for (int p = m; p <= r; p++)
			{
				System.out.print(p + " ");
			}
			System.out.println();
		}
	}
}

Output

    5
   4 5
  3 4 5
 2 3 4 5
1 2 3 4 5

Pattern 9

---

class Pattern9
{
	public static void main(String args[])
	{
		int alpha = 65;
		int r = 5;
		for (int m = 1; m <= r; m++) 
               { 
                        for (int n = r; n >= m; n--)
			{
				System.out.print(" ");
			}
			for (int p = 1; p <= m; p++)
			{
				System.out.print((char) (alpha + p - 1) + " ");
			}
			System.out.println();
		}
	}
}

Output

     A
    A B
   A B C
  A B C D
 A B C D E

Pattern 10

---

class Pattern10
{
	public static void main(String args[])
	{
		int alpha = 65;
		int rows = 5;
		for (int m = rows; m >= 1; m--)
		{
			for (int n = 1; n <= m; n++)
			{
				System.out.print(" ");
			}
			for (int p = m; p <= 5; p++)
			{
				System.out.print((char) (alpha + p - 1) + " ");
			}
			System.out.println();
		}
	}
}

Output

     E
    D E
   C D E
  B C D E
 A B C D E

Pattern 11

---

class Pattern11
{
	public static void main(String args[])
	{
		int r = 5;
		for (int m = 1; m <= r; m++) 
                { 
                        for (int n = r; n > m; n--)
			{
				System.out.print(" ");
			}
			for (int p = 1; p <= (m * 2) - 1; p++)
			{
				System.out.print("*");
			}
			System.out.println();
		}
	}
}

Output

    *
   ***
  *****
 *******
*********

Pattern 12

---

class Pattern12
{
	public static void main(String args[])
	{
		int r = 5;
		for (int m = 1; m <= r; m++) 
                { 
                        for (int n = r; n > m; n--)
			{
				System.out.print(" ");
			}
			for (int p = 1; p <= m; p++)
			{
				System.out.print(m + " ");
			}
			System.out.println();
		}
	}
}

Output

    1
   2 2
  3 3 3
 4 4 4 4
5 5 5 5 5

Pattern 13

---

class Pattern13
{
	public static void main(String[] args)
	{
		int alpha = 65;
		int r = 5;
		for (int m = 1; m <= r; m++) 
                { 
                        for (int n = r; n > m; n--)
			{
				System.out.print(" ");
			}
			for (int p = 1; p <= m; p++)
			{
				System.out.print((char) (alpha + m - 1) + " ");
			}
			System.out.println();
		}
	}
}

Output

    A
   B B
  C C C
 D D D D
E E E E E

Pattern 14

---

class Pattern14
{
	public static void main(String args[])
	{
		int r = 5;
		for (int m = r; m >= 1; m--)
		{
			for (int n = 1; n <= m; n++)
			{
				System.out.print(n + " ");
			}
			System.out.println();
		}
	}
}

Output

1 2 3 4 5
1 2 3 4
1 2 3
1 2
1

Pattern 15

---

class Pattern15
{
	public static void main(String args[])
	{
		int r = 5;
		for (int m = 1; m <= r; m++) 
                {
                        for (int n = r; n >= m; n--)
			{
				System.out.print(n + " ");
			}
			System.out.println();
		}
	}
}

Output

5 4 3 2 1
5 4 3 2
5 4 3
5 4
5

Pattern 16

---

class Pattern16
{
	public static void main(String args[])
	{
		int r = 5;
		for (int m = r; m >= 1; m--)
		{
			for (int n = r; n >= m; n--)
			{
				System.out.print(n + " ");
			}
			System.out.println();
		}
	}
}

Output

5
5 4
5 4 3
5 4 3 2
5 4 3 2 1

Pattern 17

---

class Pattern17
{
	public static void main(String args[])
	{
		int r = 5;
		int t = 1;
		for (int m = 1; m <= r; m++)
		{
			for (int n = 1; n <= m; n++)
			{
				System.out.print(t + " ");
				t++;
			}
			System.out.println();
		}
	}
}

Output

1
2 3
4 5 6
7 8 9 10
11 12 13 14 15

Pattern 18

---

class Pattern18
{
	public static void main(String args[])
	{
		int alpha = 65;
		int r = 5;
		for (int m = r; m >= 1; m--)
		{
			for (int n = 1; n <= m; n++)
			{
				System.out.print((char) (alpha + n - 1) + " ");
			}
			System.out.println();
		}
	}
}

Output

A B C D E
A B C D
A B C
A B
A

Pattern 19

---

class Pattern19
{
	public static void main(String args[])
	{
		int alpha = 65;
		int r = 5;
		for (int m = 1; m <= r; m++) 
               { 
                        for (int n = r; n >= m; n--)
			{
				System.out.print((char) (alpha + n - 1) + " ");
			}
			System.out.println();
		}
	}
}

Output

E D C B A
E D C B
E D C
E D
E

Pattern 20

---

class Pattern20
{
	public static void main(String args[])
	{
		int alpha = 65;
		int r = 5;
		for (int m = r; m >= 1; m--)
		{
			for (int n = r; n >= m; n--)
			{
				System.out.print((char) (alpha + n - 1) + " ");
			}
			System.out.println();
		}
	}
}

Output

E
E D
E D C
E D C B
E D C B A

Pattern 21

---

class Pattern21
{
	public static void main(String args[])
	{
		int alpha = 65;
		int rows = 5;
		for (int m = 1; m <= rows; m++)
		{
			for (int n = 1; n <= m; n++)
			{
				System.out.print((char) (alpha) + " ");
				alpha++;
			}
			System.out.println();
		}
	}
}

Output

A
B C
D E F
G H I J
K L M N O

Pattern 22

---

class Pattern22
{
	public static void main(String args[])
	{
		int r = 5;
		for (int m = 1; m <= r; m++) 
		{ 
			for (int n = r; n > m; n--)
			{
				System.out.print(" ");
			}
			int temp = 1;
			for (int p = 1; p <= m; p++)
			{
				System.out.print(temp + " ");
				temp = temp * (m - p) / (p);
			}
			System.out.println();
		}
	}
}

Output

    1
   1 1
  1 2 1
 1 3 3 1
1 4 6 4 1

Pattern 23

---

class Pattern23
{
	public static void main(String args[])
	{
		int alpha = 65;
		int r = 5;
		for (int m = 1; m <= r; m++) 
		{ 
			for (int n = r; n > m; n--)
			{
				System.out.print(" ");
			}
			int temp = 1;
			for (int p = 1; p <= m; p++)
			{
				System.out.print((char) (alpha - 1 + temp) + " ");
				temp = temp * (m - p) / (p);
			}
			System.out.println();
		}
	}
}

Output

    A
   A A
  A B A
 A C C A
A D F D A

Pattern 24

---

class Pattern24
{
	public static void main(String args[])
	{
		int r = 5;
		for (int m = 1; m <= r; m++)
		{
			for (int n = 1; n <= m; n++) 
			{ 
				System.out.print(n + " "); 
			} 
				System.out.println(); 
			}
                for (int m = r; m >= 1; m--)
		{
			for (int n = 1; n < m; n++)
			{
				System.out.print(n + " ");
			}
			System.out.println();
		}
	}
}

Output

1
1 2
1 2 3
1 2 3 4
1 2 3 4 5
1 2 3 4
1 2 3
1 2
1

Pattern 25

---

class Pattern25
{
	public static void main(String args[])
	{
		int alpha = 65;
		int r = 5;
		for (int m = 1; m <= r; m++)
		{
			for (int n = 1; n <= m; n++) 
			{ 
				System.out.print((char) (alpha + n - 1) + " "); 
			} 
				System.out.println(); 
			} 
		for (int m = r; m >= 1; m--)
		{
			for (int n = 1; n <= m - 1; n++)
			{
				System.out.print((char) (alpha + n - 1) + " ");
			}
			System.out.println();
		}
	}
}

Output

A
A B
A B C
A B C D
A B C D E
A B C D
A B C
A B
A

Pattern 26

---

class Pattern26
{
	public static void main(String args[])
	{
		int r = 5;
		for (int m = 1; m <= r; m++)
		{
			for (int i = 1; i <= m; i++)
			{
				System.out.print("* ");
			}
			System.out.println();
		}
		for (int m = 1; m <= r - 1; m++) 
        {
            for (int i = r - 1; i >= m; i--)
			{
				System.out.print("* ");
			}
			System.out.println();
		}
	}
}

Output

*
* *
* * *
* * * *
* * * * *
* * * *
* * *
* *
*

Pattern 27

---

class Pattern27
{
	public static void main(String args[])
	{
		int r = 5;
		for (int i = 1; i <= r; i++) 
                {
                        for (int j = r; j > i; j--)
			{
				System.out.print(" ");
			}
			for (int k = 1; k <= i; k++)
			{
				System.out.print("*");
			}
			System.out.println();
		}
 
		for (int i = 1; i <= r - 1; i++)
		{
			for (int j = 1; j <= i; j++) 
                        { 
                                System.out.print(" "); 
                        } 
                        for (int k = r - 1; k >= i; k--)
			{
				System.out.print("*");
			}
			System.out.println();
		}
	}
}

Output

    *
   **
  ***
 ****
*****
 ****
  ***
   **
    *

Pattern 28

---

class Pattern28
{
	public static void main(String args[])
	{
		int r = 5;
		for (int m = r; m >= 1; m--)
		{
			for (int n = 1; n <= m; n++)
			{
				System.out.print(n + " ");
			}
			System.out.println();
		}
		for (int m = 2; m <= r; m++)
		{
			for (int n = 1; n <= m; n++)
			{
				System.out.print(n + " ");
			}
			System.out.println();
		}
	}
}

Output

1 2 3 4 5
1 2 3 4
1 2 3
1 2
1
1 2
1 2 3
1 2 3 4
1 2 3 4 5

Pattern 29

---

class Pattern29
{
	public static void main(String args[])
	{
		int r = 5;
		for (int m = r; m >= 1; m--)
		{
			for (int n = m; n >= 1; n--)
			{
				System.out.print(n + " ");
			}
			System.out.println();
		}
		for (int m = 2; m <= r; m++) 
                { 
                        for (int n = m; n >= 1; n--)
			{
				System.out.print(n + " ");
			}
			System.out.println();
		}
	}
}

Output

5 4 3 2 1
4 3 2 1
3 2 1
2 1
1
2 1
3 2 1
4 3 2 1
5 4 3 2 1

Pattern 30

---

class Pattern30
{
	public static void main(String args[])
	{
		int alpha = 65;
		int r = 5;
		for (int m = r; m >= 1; m--)
		{
			for (int n = 1; n <= m; n++)
			{
				System.out.print((char) (alpha + n - 1) + " ");
			}
			System.out.println();
		}
		for (int m = 2; m <= r; m++)
		{
			for (int n = 1; n <= m; n++)
			{
				System.out.print((char) (alpha + n - 1) + " ");
			}
			System.out.println();
		}
	}
}

Output

A B C D E
A B C D
A B C
A B
A
A B
A B C
A B C D
A B C D E

Pattern 31

---

public class Pattern31
{
	public static void main(String args[])
	{
		int alpha = 65;
		int r = 5;
		for (int m = r; m >= 1; m--)
		{
			for (int n = m; n >= 1; n--)
			{
				System.out.print((char) (alpha + n - 1) + " ");
			}
			System.out.println();
		}
		for (int m = 2; m <= r; m++) 
                { 
                        for (int n = m; n >= 1; n--)
			{
				System.out.print((char) (alpha + n - 1) + " ");
			}
			System.out.println();
		}
	}
}

Output

E D C B A
D C B A
C B A
B A
A
B A
C B A
D C B A
E D C B A

Pattern 32

---

class Pattern32
{
	public static void main(String args[])
	{
		int r = 5;
		for (int m = r; m >= 1; m--)
		{
			for (int n = m; n >= 1; n--)
			{
				System.out.print("* ");
			}
			System.out.println();
		}
		for (int m = 2; m <= r; m++) 
                { 
                        for (int n = m; n >= 1; n--)
			{
				System.out.print("* ");
			}
			System.out.println();
		}
	}
}

Output

* * * * *
* * * *
* * *
* *
*
* *
* * *
* * * *
* * * * *

Pattern 33

---

class Pattern33
{
	public static void main(String args[])
	{
		int r = 5;
		for (int m = 1; m <= r; m++) 
                { 
                        for (int n = r; n > m; n--)
			{
				System.out.print("  ");
			}
			for (int k = 1; k <= m; k++) 
                        { 
                                System.out.print(k + " "); 
                        } 
                        for (int l = m - 1; l >= 1; l--)
			{
				System.out.print(l + " ");
			}
			System.out.println();
		}
	}
}

Output

        1
      1 2 1
    1 2 3 2 1
  1 2 3 4 3 2 1
1 2 3 4 5 4 3 2 1

Pattern 34

---

class Pattern34
{
	public static void main(String args[])
	{
		int alpha = 65;
		int r = 5;
		for (int m = 1; m <= r; m++) 
                { 
                        for (int n = r; n > m; n--)
			{
				System.out.print("  ");
			}
			for (int k = 1; k <= m; k++) 
                        { 
                                System.out.print((char) (alpha + k - 1) + " "); 
                        } 
                        for (int l = m - 1; l >= 1; l--)
			{
				System.out.print((char) (alpha + l - 1) + " ");
			}
			System.out.println();
		}
	}
}

Output

        A
      A B A
    A B C B A
  A B C D C B A
A B C D E D C B A
 

Pattern 35

---

class Pattern35
{
	public static void main(String args[])
	{
		int r = 5;
		for (int m = 1; m <= r; m++)
		{
			for (int n = 1; n < m; n++)
			{
				System.out.print("0 ");
			}
			System.out.print(m + " ");
			for (int p = m; p < r; p++)
			{
				System.out.print("0 ");
			}
			System.out.println();
		}
	}
}

Output

1 0 0 0 0
0 2 0 0 0
0 0 3 0 0
0 0 0 4 0
0 0 0 0 5
 

Pattern 36

---

class Pattern36
{
	public static void main(String args[])
	{
		int r = 5;
		for (int m = 1; m <= r; m++) 
                { 
                        for (int n = r; n > m; n--)
			{
				System.out.print(1 + " ");
			}
			for (int p = 1; p <= m; p++)
			{
				System.out.print(m + " ");
			}
			System.out.println();
		}
	}
}

Output

1 1 1 1 1
1 1 1 2 2
1 1 3 3 3
1 4 4 4 4
5 5 5 5 5
 

Pattern 37

---

class Pattern37
{
	public static void main(String args[])
	{
		int alpha = 65;
		int r = 5;
		for (int m = 1; m <= r; m++) 
                { 
                        for (int n = r; n > m; n--)
			{
				System.out.print((char) (alpha) + " ");
			}
			for (int p = 1; p <= m; p++)
			{
				System.out.print((char) (alpha + m - 1) + " ");
			}
			System.out.println();
		}
	}
}

Output

A A A A A
A A A B B
A A C C C
A D D D D
E E E E E
 

Pattern 38

---

class Pattern38
{
	public static void main(String args[])
	{
		int r = 5;
		for (int m = 1; m <= r; m++) 
                { 
                        for (int n = r; n > m; n--)
			{
				System.out.print(" ");
			}
			for (int p = 1; p <= m; p++)
			{
				System.out.print(p + " ");
			}
			System.out.println();
		}
		for (int m = 1; m <= r; m++)
		{
			for (int n = 1; n <= m; n++)
			{
				System.out.print(" ");
			}
			for (int p = 1; p <= r - m; p++)
			{
				System.out.print(p + " ");
			}
			System.out.println();
		}
	}
}

Output

    1
   1 2
  1 2 3
 1 2 3 4
1 2 3 4 5
 1 2 3 4
  1 2 3
   1 2
    1
 

Pattern 39

---

class Pattern39
{
	public static void main(String args[])
	{
		int alpha = 65;
		int r = 5;
		for (int m = 1; m <= r; m++) 
                { 
                        for (int n = r; n >= m; n--)
			{
				System.out.print(" ");
			}
			for (int p = 1; p <= m; p++)
			{
				System.out.print((char) (alpha + p - 1) + " ");
			}
			System.out.println();
		}
		for (int m = 1; m <= r; m++)
		{
			for (int n = 0; n <= m; n++)
			{
				System.out.print(" ");
			}
			for (int p = 1; p <= r - m; p++)
			{
				System.out.print((char) (alpha + p - 1) + " ");
			}
			System.out.println();
		}
	}
}

Output

     A
    A B
   A B C
  A B C D
 A B C D E
  A B C D
   A B C
    A B
     A
 

Pattern 40

---

class Pattern40
{
	public static void main(String args[])
	{
		int r = 5;
		for (int m = 1; m <= r; m++) 
                { 
                        for (int n = r; n > m; n--)
			{
				System.out.print(" ");
			}
			for (int p = 1; p <= (m * 2) - 1; p++) 
                        { 
                                System.out.print("*"); 
                        } 
                        System.out.println(); 
                } 
                for (int m = r - 1; m >= 1; m--)
		{
			for (int n = r - 1; n >= m; n--)
			{
				System.out.print(" ");
			}
			for (int p = 1; p <= (m * 2) - 1; p++)
			{
				System.out.print("*");
			}
			System.out.println();
		}
	}
}

Output

    *
   ***
  *****
 *******
*********
 *******
  *****
   ***
    *
 

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Basic Programs

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Materials

• Java Materials

---

• Java Introduction
• History of Java
• Installation
• Basic Program in Java
• Command Line Arguments in Java
• Single and Multi Line Comments in Java
• Variables in Java
• Type Casting in Java
• Arithmetic Operators in Java
• Arithmetic Assignment operators in Java
• Relational Operators in Java
• Logical Operators in Java
• Conditional or Ternary Operators in Java
• Unary Operators in Java
• Bitwise & Shift Operators in Java
• Scanner Class in Java
• IF Statement in Java
• IF ELSE Statement in Java
• ELSE IF Ladder in Java
• Nested If in Java
• Switch Statement in Java
• Group Switch Statement in Java
• While Loop in Java
• do While Loop in Java
• For Loop in Java
• Enhanced for loop in Java
• Nested For Loop in Java
• Break & Continue in Java
• Factorial in Java
• Sum and Average of N Numbers in Java
• Fibonacci Series in Java
• Reverse of n digit number in Java
• Number is Palindrome or Not in Java
• Armstrong Number in Java
• Armstrong Number between 100-999 in Java
• Multiplication tables in Java
• Factor of the given number in Java
• Number is prime or not in Java
• Prime Number between 100-999 in Java
• Perfect Number in Java
• Strong Number in Java
• Array in Java
• Count odd or even numbers in Java
• Ascending Order in Java
• Insert an element (specific position) into an array in Java
• Find the duplicate values of an array in Java
• Two Dimension Arrays in Java
• Jagged-Array in Java
• Jagged-Array Using For Each Loop in Java
• ASCII in Java
• String in Java
• StringBuffer & StringBuilder in Java
• count Vowels,Capital letters,small letters,numbers and space in Java
• Reverse A String in Java
• convert the given string into UPPERCASE in Java
• convert the given string into lowercase in Java
• convert the given string into Capitalized Each Word in Java
• convert the given string into tOGGLE cASE wORD in Java
• Math Functions in Java
• Types of Methods in Java
• Returning Arrays from Method in Java
• Static Member Function in Java
• Convert Decimal To Binary in Java
• Introduction of Object Oriented Programming in Java
• Class & object in Java
• Data Hiding Getter & Setter in Java
• Constructor in Java
• Parametrized Constructor & Constructor Overloading in Java
• Copy Constructor in Java
• Arrays of Objects in Java
• Nesting of Methods in Java
• Single Inheritance in Java
• Multilevel Inheritance in Java
• Hierarchical Inheritance in Java
• Method With varargs in Java
• Method Overloading in Java
• Method Overriding in Java
• Abstract Class in Java
• Smart Phone Example using Abstract Class in Java
• What is interface in Java
• Implement multiple interfaces in Java
• More About Interface in Java
• Difference Between Abstract Class and Interface in Java
• Nested Inner Class in Java
• Local Inner Class in Java
• Anonymous Inner Class in Java
• Static Inner Class in Java
• Static Members in Java
• Static Blocks in Java
• Final in Java
• Final Methods in Java
• Final Class in Java
• Singleton Class in Java
• Enumeration in Java
• Date and Time Functions in Java
• Wrapper Class - Converting primitive number to number object in Java
• Wrapper Class - Converting number object to primitive number in Java
• Wrapper Class - Converting primitive number to string object in Java
• Wrapper Class - Converting string object to primitive numbers in Java
• Wrapper Class - Converting numeric string object to primitive numbers in Java
• Shallow Copy Object Cloning in Java
• Deep Copy Object Cloning in Java
• Java Reflection API in Java
• Calling Private Method in Java Class using Reflection API in Java

Abstract Window Toolkit

---

• Java AWT (Abstract Window Toolkit)
• Frame in Java AWT
• Button and ActionListener in Java AWT
• CheckBox in Java AWT
• RadioButton in Java AWT
• TextField in Java AWT
• Basic Addition Program in Java AWT
• TextArea in Java AWT
• Count Words and Characters in Java AWT
• Choice in Java AWT
• List in Java AWT
• Canvas in Java AWT
• MenuBar,Menu,MenuItem in Java AWT
• Panel in Java AWT
• Form Design Using Java AWT
• Database Operation in Java AWT

SQLITE CRUD

• SQLite in Java

MySQL CRUD

• MySQL in Java

Swing CRUD

• Swing in Java

JavaFX

• JavaFX in Java

Java Programs

• Patterns in Java

Exercise Questions and Answers

• Basic Exercise Programs in Java
• Conversion Programs in Java
• IF Statement Exercise in Java
• Looping Statement Exercise in Java
• Array Exercise in Java
• DateTime Exercise in Java
• String Exercise in Java
• Math Exercise in Java
• Switch Exercise in Java
• EnumSet Collection Exercise in Java
• Recursion Function Exercise in Java
• FileHandling Exercise in Java
• Class and Object Exercise in Java
• Thread Exercise in Java
• Inheritance Exercise in Java
• Lambda Expression Exercise in Java
• Method Overriding Exercise in Java
• Method Overloading Exercise in Java
• Abstract Class Exercise in Java
• Interface Exercise in Java
• Method with Varargs Exercise in Java
• Constructor Exercise in Java
• ArrayList Exercise in Java
• LinkedList Exercise in Java
• TreeSet Exercise in Java
• TreeMap Exercise in Java
• HashMap Exercise in Java
• HashSet Exercise in Java
• Vector Class Exercise in Java
• Stack Exercise in Java
• Queue Exercise in Java

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