Java Program to Print Diamond Character Pattern

Last Updated: 09 August, 2022

On this tutorial page, we are going to learn how to write a Java program to print the diamond character pattern.

A pattern program is composed of two or more loop statements and print statements.

Let's see the Java Character Pattern Program Implementation.

Program: Diamond Character Pattern Program in Java

  public class Pattern16 {
    public static void main(String[] args) {
  
      int row, column, alphabet, numOfRows = 4;
  
      // outer loop for number of rows
      for (row = 0; row <= numOfRows; row++) {
        alphabet = 65;
        // inner loop for number of columns to print spaces
        for (column = numOfRows + 1; column >= row; column--) {
          System.out.print(" ");
        }
        // inner loop for number of columns to print characters
        for (column = 0; column <= row; column++) {
          System.out.print((char) (alphabet + column) + " ");
        }
        // Line break
        System.out.println();
      }
      
      // outer loop for number of rows
      for (row = 1; row <= numOfRows; row++) {
        alphabet = 65;
        // inner loop for number of columns to print spaces
        for (column = -1; column <= row; column++) {
          System.out.print(" ");
        }
        // inner loop for number of columns to print characters
        for (column = 0; column <= numOfRows - row; column++) {
          System.out.print((char) (alphabet + column) + " ");
        }
        // Line break
        System.out.println();
      }
    }
  }