I DIDMT GET A OUTPUT PLZ.. ANY ONE..TRY THIS

Question

package com.mkyong;

import java.util.Collections;

public class CreatePyramid {

public static void main(String[] args) {

int rows = 5;

System.out.println("\n1. Half Pyramid\n");
for (int i = 0; i < rows; i++) {

for (int j = 0; j <= i; j++) {
System.out.print("*");
}

System.out.println("");
}

System.out.println("\n2. Full Pyramid\n");
for (int i = 0; i < rows; i++) {

for (int j = 0; j < rows - i; j++) {
System.out.print(" ");
}

for (int k = 0; k <= i; k++) {
System.out.print("* ");
}

System.out.println("");
}

//java 8 , one line
System.out.println("\n3. Full Pyramid (Compact)\n");
for (int i = 0; i < rows; i++) {

System.out.println(String.join("", Collections.nCopies(5 - i - 1, " "))
+ String.join("", Collections.nCopies(2 * i + 1, "*")));

}

// java 8
System.out.println("\n4. Inverted Pyramid\n");
for (int i = rows; i > 0; i--) {

System.out.println(String.join("", Collections.nCopies(5 - i, " "))
+ String.join("", Collections.nCopies(2 * i - 1, "*")));

}

}

}

Answer 1

Works here in CodePlayground if you remove the line @Michal Pácal indicated.

Answer 2

[answering from head]
I thing it have to do something with that "package" thing. Your main is in the class CreatePyramid, witch isn't projects main class so your main doesn't get called.
Just try removing the package line and name .java file same as class