kochan.java

public class kochan{

    public static void main(String args[]){
        reverseTriangle(10);
        System.out.println("--");
        square(10);
        System.out.println("--");
        triangle(10);
    }

    public static String line(String character,int count){
        String str = "";
        for(int i = 0;i < count;i++){
            str = str + character;
        }
        return str; 
    }

    public static void square(int lines){
        for(int i = 0;i < lines;i++){
            System.out.println(line("*",lines));
        } 
    }

    public static void reverseTriangle(int lines){
        while(lines > 0){
            System.out.println(line(".",lines--));
        }
    }

    public static void triangle(int lines){
        int current = 1;
        while(true){
            System.out.println(line(".",current++));
            if(current > lines){
                break;
            }
        }
    }
}