ledMatrix

import java.util.Random;

public class MyLEDMatrix {
	        MyLEDLamp[][] ledmatrix;
	    public MyLEDMatrix(int n){
	        this.ledmatrix = new MyLEDLamp[n][n];
	        int panjang = this.ledmatrix.length;
	        int lebar = this.ledmatrix[0].length;
	        for(int i = 0;i<panjang;i++){
	            for(int j = 0;j<lebar;j++){
	                this.ledmatrix[i][j]=new MyLEDLamp();
	            }
	           }
	    }

	    public void setAll(boolean on){
	        int panjang = this.ledmatrix.length;
	        int lebar = this.ledmatrix[0].length;
	        for(int i = 0;i<panjang;i++){
	            for(int j = 0;j<lebar;j++){
	                if(on == true){
	                    this.ledmatrix[i][j].setOn();}
	                else{
	                    this.ledmatrix[i][j].setOff();
	                }
	            }
	        }
	    }

	    public String print(){
	        int panjang = this.ledmatrix.length;
	        int lebar = this.ledmatrix[0].length;
	        String output = "";
	        for(int i = 0;i<panjang;i++){
	            for(int j = 0;j<lebar;j++){
	                if(this.ledmatrix[i][j].getStatus() == true){
	                    output += "@";}
	                else{
	                    output += " ";}
	            }
	            output += "\n";
	        }
	        return output;
	    }

	    public void setTop(){
	        String res = new String();
	        int panjang = this.ledmatrix.length;
	        int lebar = this.ledmatrix[0].length;
	        for(int k = 0;k <= (panjang/2);k++){
	            int l;
	            int x;
	            int y;
	            for(l = 0;l<(lebar/2)-k;l++){
	                this.ledmatrix[k][l].setOff();
	                res=res+this.ledmatrix[k][l].print();
	            }
	            for(x = l;x<=(lebar/2)+k;x++){
	                this.ledmatrix[k][l].setOn();
	                res=res+this.ledmatrix[k][l].print();
	               }
	            for(y = x;y<(lebar/2);y++){
	               this.ledmatrix[k][l].setOff();
	               res=res+this.ledmatrix[k][l].print();
	               }
	            res=res+"\n";
	        }
	        System.out.println(res);
	    }

	    public void setBottom(){
	        int panjang = this.ledmatrix.length;
	        int lebar = this.ledmatrix[0].length;
	        String res = new String();
	        for(int k = (panjang/2)+1;k < panjang;k++){
	            int l;
	            int i;
	            for(l = 0;l<lebar;l++){
	                this.ledmatrix[k][l].setOff();
	                res=res+this.ledmatrix[k][l].print();
	            }
	            res=res+"\n";
	        }

	        for(int i = (panjang/2)+1;i<panjang;i++){
	                this.ledmatrix[i][(lebar/2)].setOn();
                    res=res+this.ledmatrix[i][l].print();
	            }
	    }

	    public void setArrow(){
	        this.setTop();
	        this.setBottom();
	    }
}