Number Patterns
Print a simple increasing number triangle pattern.
BeginnerTopic: Module 3: Loop Programs
Java Number Patterns Program
This program helps you to learn the fundamental structure and syntax of Java programming.
public class Main {
public static void main(String[] args) {
int n = 5;
for (int i = 1; i <= n; i++) {
for (int j = 1; j <= i; j++) {
System.out.print(j + " ");
}
System.out.println();
}
}
}Output
1 1 2 1 2 3 1 2 3 4 1 2 3 4 5
Understanding Number Patterns
We use nested loops: outer for rows, inner for printing numbers up to the current row.
Note: To write and run Java programs, you need to set up the local environment on your computer. Refer to the complete article Setting up Java Development Environment. If you do not want to set up the local environment on your computer, you can also use online IDE to write and run your Java programs.