Pattern Program Using Numbers in Java

Pattern Program Using Numbers in Java. This pattern program will print the limited 100 numbers in a triangle shape for beginners to understand the basic pattern programming concepts.

public class Main
{
public static void main(String[] args)
{
int lines=10;
int i=1;
int j;
for(i=1;i<=lines;i++)
{
for(j=1;j<=i;j++)
{
System.out.print(i*j+" ");
}
System.out.println("");
}
}
}

 

Output:

1
2 4
3 6 9
4 8 12 16
5 10 15 20 25
6 12 18 24 30 36
7 14 21 28 35 42 49
8 16 24 32 40 48 56 64
9 18 27 36 45 54 63 72 81
10 20 30 40 50 60 70 80 90 100

For Loop in Java Program

The “for” loop in Java is an entry-controlled loop that allows a user to iteratively run a block of statement(s) for a fixed number of times. The number of iterations is determined by the test condition specified within the “for” loop. The Java “for” loop is one of the simplest Java loops to grasp. 

A “For” Loop is used to iterate over a specified block of code a predetermined number of times. A for loop is a control flow statement that specifies iteration and allows code to be executed several times. When the number of iterations is known before entering the loop, for loops are commonly employed. For loops are shorthand for while loops in that they increase and test a loop variable.

static void main in Java

The keyword public static void main is used to create a main function in a Java application. It’s the program’s main method, and it calls all others. It does not return values but does accept parameters for complicated command-line processing.