Java Examples – Printing a Diamond Shape
Java ExamplesOutput a diamond shape with a specified number of lines.
Example
public class Diamond {
public static void main(String[] args) {
print(8); //Output an 8-line diamond
}
public static void print(int size) {
if (size % 2 == 0) {
size++; //Calculate the size of the diamond
}
for (int i = 0; i < size / 2 + 1; i++) {
for (int j = size / 2 + 1; j > i + 1; j--) {
System.out.print(" "); //Output blank spaces at the top-left corner
}
for (int j = 0; j < 2 * i + 1; j++) {
System.out.print("*"); //Output the upper half edge of the diamond
}
System.out.println(); //New line
}
for (int i = size / 2 + 1; i < size; i++) {
for (int j = 0; j < i - size / 2; j++) {
System.out.print(" "); //Output blank spaces at the bottom-left corner of the diamond
}
for (int j = 0; j < 2 * size - 1 - 2 * i; j++) {
System.out.print("*"); //Output the lower half edge of the diamond
}
System.out.println(); //New line
}
}
}
Output result:
*
***
*****
*******
*********
*******
*****
***
*
Other extensions