PRINT PATTERN USING FOR LOOP AND ELSE,IF IN JAVA

public class Pattern{

    public static void main(String[] args){

        int n = 5;
        int m = 4;

        for(int i=1; i<=n; i++) {

            for(int j=1; j<=m; j++) {
                if(i == 1 || j == 1|| i == n|| j == m){

                System.out.print("*");
              } else {

                    System.out.print(" ");
                }
            }

            System.out.println();
        }
    }
}

public class Pattern{

    public static void main(String[] args){

        int n = 4;
        for(int i = 1; i<=n; i++) {

            // inner loop

            for(int j=1; j<=i; j++) {

                System.out.print("*");
                
            }
            System.out.println();


        }

    
    }
    
}

output

*

**

***

****

public class Pattern {

//using the dicrement operator

    public static void main(String[] args){

        int n = 4;
        for(int i=n;i>=1; i--){

            for(int j=1;j<=i; j++){

                System.out.print("*");
            }

            System.out.println();
        }
    }
    
}

using the dicrement operator