Examples Java 3 كورس تعلم جافا كامل بالعربي ، Examples Java 4 تعلم جافا من البداية إلى النهاية
Alphabet Pattern
Alphabet Pattern
A BB CCC DDDD EEEEE
Example
import java.util.*;
class AlphabetPattern
{
public static void main(String[] arg)
{
int line, row, col;
char ch = 'A';
Scanner scanner = new Scanner(System.in);
System.out.print("Enter number of lines : ");
line = scanner.nextInt();
for (row = 1; row <= line; row++)
{
for (col = 1; col <= row; col++)
{
System.out.print("" + ch);
}
System.out.println();
ch++;
}
}
}
•Output
A BB CCC DDDD EEEEE
Binary Pattern
Binary Pattern
1 01 101 0101 10101
Example
class BinaryPattern
{
public static void main(String s[])
{
int i, j;
int count = 1;
for (i = 1; i <= 5; i++)
{
for (j = 1; j <= i; j++)
{
System.out.format("%d", count++ % 2);
if (j == i && i != 5)
System.out.println("");
}
if (i % 2 == 0)
count = 1;
else
count = 0;
}
}
}
•Output
1 01 101 0101 10101
Christmas tree.
Christmas tree.
Example
class ChristmasTree
{
public static final int segments = 4;
public static final int height = 4;
public static void main(String[] args)
{
makeTree();
}
public static void makeTree()
{
int maxStars = 2 * height + 2 * segments - 3;
String maxStr = "";
for (int l = 0; l < maxStars; l++)
{
maxStr += " ";
}
for (int i = 1; i <= segments; i++)
{
for (int line = 1; line <= height; line++)
{
String starStr = "";
for (int j = 1; j <= 2 * line + 2 * i - 3; j++)
{
starStr += "*";
}
for (int space = 0; space <= maxStars - (height + line + i); space++)
{
starStr = " " + starStr;
}
System.out.println(starStr);
}
}
for (int i = 0; i <= maxStars / 2; i++)
{
System.out.print(" ");
}
System.out.println(" " + "*" + " ");
for (int i = 0; i <= maxStars / 2; i++)
{
System.out.print(" ");
}
System.out.println(" " + "*" + " ");
for (int i = 0; i <= maxStars / 2 - 3; i++)
{
System.out.print(" ");
}
System.out.println(" " + "*******");
}
}
•Output
Christmas tree pattern
Christmas tree pattern
X X XXX X XXXXX X XXX XXXXXX
Example
class ChristmasTreePattern
{
public static void main(String[] arg)
{
drawChristmasTree(4);
}
private static void drawChristmasTree(int n)
{
for (int i = 0; i < n; i++)
{
triangle(i + 1, n);
}
}
private static void triangle(int n, int max)
{
for (int i = 0; i < n; i++)
{
for (int j = 0; j < max - i - 1; j++)
{
System.out.print(" ");
}
for (int j = 0; j < i * 2 + 1; j++)
{
System.out.print("X");
}
System.out.println("");
}
}
}
•Output
X X XXX X XXXXX X XXX XXXXXX
Floyd Triangle
Floyd Triangle
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
Example
import java.util.Scanner;
class FloydTriangle
{
public static void main(String args[])
{
int n, num = 1, c, d;
Scanner in = new Scanner(System.in);
System.out.print("Enter the number of rows of floyd's triangle : ");
n = in.nextInt();
System.out.println("Floyd's triangle :-");
for (c = 1; c <= n; c++)
{
for (d = 1; d <= c; d++)
{
System.out.print(num + " ");
num++;
}
System.out.println();
}
}
}
•Output
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
Number pattern 1.
Number pattern 1.
1 12 123 1234 12345
Example
class NumberPat1
{
public static void main(String arg[])
{
for (int i = 1; i <= 5; i++)
{
for (int j = 1; j <= i; j++)
{
System.out.print(j);
}
System.out.println();
}
}
}
•Output
1 12 123 1234 12345
Number pattern 2.
Number pattern 2.
54321 5432 543 54 5
Example
class NumberPat2
{
public static void main(String arg[])
{
for (int i = 1; i <= 5; i++)
{
for (int j = 5; j >= i; j--)
{
System.out.print(j);
}
System.out.println();
}
}
}
•Output
54321 5432 543 54 5
Number pattern 3.
Number pattern 3.
12345 1234 123 12 1
Example
class NumberPat3
{
public static void main(String arg[])
{
for (int i = 1, r = 5; i <= 5; i++, r--)
{
for (int j = 1; j <= r; j++)
{
System.out.print(j);
}
System.out.println();
}
}
}
•Output
12345 1234 123 12 1
Number pattern 4.
Number pattern 4.
1 12 123 1234 12345 1234 123 12 1
Example
class NumberPat4
{
public static void main(String arg[])
{
int ck = 0, c = 2;
while (c > 0)
{
if (ck == 0)
{
for (int i = 1; i <= 5; i++)
{
for (int j = 1; j <= i; j++)
{
System.out.print(j);
}
System.out.println();
}
ck++;
}
else
{
for (int i = 1, r = 5 - 1; i <= 5 - 1; i++, r--)
{
for (int j = 1; j <= r; j++)
{
System.out.print(j);
}
System.out.println();
}
}
c--;
}
}
}
•Output
1 12 123 1234 12345 1234 123 12 1
Number pattern 5.
Number pattern 5.
12345 1234 123 12 1 12 123 1234 12345
Example
class NumberPat5
{
public static void main(String arg[])
{
int ck = 0, c = 2;
while (c > 0)
{
if (ck == 0)
{
for (int i = 1, r = 5; i <= 5; i++, r--)
{
for (int j = 1; j <= r; j++)
{
System.out.print(j);
}
System.out.println();
}
ck++;
}
else
{
for (int i = 2; i <= 5; i++)
{
for (int j = 1; j <= i; j++)
{
System.out.print(j);
}
System.out.println();
}
}
c--;
}
}
}
•Output
12345 1234 123 12 1 12 123 1234 12345