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@@ -5,3 +5,196 @@ order: "4C"
 section: "Arrays"
 description: "learn Arrays"
 ---
+
+Java pattern program enhances the coding skill, logic, and looping concepts. It is mostly asked in Java interview to check the logic and thinking of the programmer. We can print a Java pattern program in different designs. To learn the pattern program, we must have a deep knowledge of the Java loop, such as for loop do-while loop. In this section, we will learn how to print a pattern in Java.
+
+## **We have classified the Java pattern program into three categories:**
+- Star Pattern
+- Number Pattern
+- Character Pattern
+
+### **Here we explain each category with examples :**
+
+## **Star Pattern :**
+
+_**Qn1 : Right Triangle Star Pattern**_
+
+### **Code :**
+```java
+public class RightTriangleStarPattern   
+{   
+    public static void main(String args[])   
+    {   
+        //i for rows and j for columns      
+        //row denotes the number of rows you want to print  
+        int i, j, row = 4;   
+        //outer loop for rows  
+        for(i=0; i<row; i++)   
+        {   
+            //inner loop for columns  
+            for(j=0; j<=i; j++)   
+            {   
+                //prints stars   
+                System.out.print("* ");   
+            }   
+            //throws the cursor in a new line after printing each line  
+            System.out.println();   
+        }   
+    }   
+}  
+```
+### **Output :**
+```
+*  
+* *  
+* * *  
+* * * * 
+```
+
+### **Explanation & Approch of Solution :**
+Whenever you design logic for a pattern program, first draw that pattern in the blocks, as we have shown in the following image. The figure presents a clear look of the pattern.
+
+
+![Img](./images/pattern-print.png)
+
+In the above pattern, the row is denoted by i and the column is denoted by j. We see that the first row prints only a star. The second-row prints two stars, and so on. The colored blocks print the spaces.
+
+### **Iteration-1 :**
+```
+For i=0, 0<4 (true)
+For j=0, j<=0 (true)
+```
+The first print statement prints a star at the first row and the second println statement prints the spaces and throws the cursor at the next line.
+
+**Output Console :**
+```
+*
+```
+
+### **Iteration-2 :**
+```
+For i=1, 1<4 (true)
+For j=1, 1<=1 (true)
+```
+The first print statement prints two stars at the second row and the second println statement prints the spaces and throws the cursor at the next line.
+
+**Output Console :**
+```
+*
+* *
+```
+
+### **Iteration-3 :**
+```
+For i=2, 2<4 (true)
+For j=2, 2<=2 (true)
+```
+The first print statement prints three stars at the third row and the second println statement prints the spaces and throws the cursor at the next line.
+
+**Output Console :**
+```
+*
+* *
+* * *
+```
+
+### **Iteration-4 :**
+```
+For i=3, 3<4 (true)
+For j=3, 3<=3 (true)
+```
+The first print statement prints four stars at the fourth row and the second println statement prints the spaces and throws the cursor at the next line.
+
+**Output Console :**
+```
+*
+* *
+* * *
+* * * *
+```
+**Now the value of i and j is increased to 4.**
+
+```
+For i=4, 4<4 (false)
+```
+The execution of the program will terminate when the value of i will be equal to the number of rows.
+
+
+## **Number Pattern :**
+
+_**Qn1 : Right Triangle Number Pattern**_
+
+### **Code :**
+```java
+public class RightTriangleNumberPattern   
+{   
+    public static void main(String[] args)
+    {
+        //i for rows and j for columns      
+        //row denotes the number of rows you want to print  
+        int i, j, row = 4;
+        //outer loop for rows
+        for (i = 1; i <= row; i++)
+        {
+            //inner loop for columns
+            for (j = 1; j <= i; j++)
+            {
+                //print the current value of j
+                System.out.print(j + " ");
+            }
+            //throws the cursor in a new line after printing each line
+            System.out.println();
+        }
+    } 
+}  
+```
+### **Output :**
+```
+1 
+1 2 
+1 2 3 
+1 2 3 4 
+```
+
+
+## **Character Pattern :**
+
+_**Qn1 : Right Triangle Character Pattern**_
+
+### **Code :**
+```java
+public class RightTriangleCharacterPattern   
+{   
+    public static void main(String[] args)
+    {
+        //i for rows and j for columns      
+        //row denotes the number of rows you want to print  
+        int i, j, row = 4;
+        //declear alphabet variable to print the value 
+        int alphabet = 65;
+        //outer loop for rows
+        for (i = 1; i <= row; i++)
+        {
+            //inner loop for columns
+            for (j = 1; j <= i; j++)
+            {
+                //print the current value of alphabet in character form
+                System.out.print((char) alphabet + " ");
+            }
+            //increment the alphabet variable by 1
+            alphabet++;
+            //throws the cursor in a new line after printing each line
+            System.out.println();
+        }
+    } 
+}  
+```
+### **Output :**
+```
+A 
+B B 
+C C C 
+D D D D 
+```
+<br>
+Happy Learning 👍
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