Explain these codes

Code 1

public class Code1 {

public static void main(String [] args)

{

Output o = new Output();

o.go();

}

void go()

{

int y = 7;

for(int x = 1; x<8; x++)

{

y++;

if (x>4)

{

System.out.print(++y + " ");

}

if (y>14)

{

System.out.println( " x = " + x);

break;

}

}

}

}

Output

13 15 x = 6

Code2

public class Code2 {

public static void main (String[] args)

{

for (int x = 0; x<4; x++) {

for (int y= 4; y>2; y--)

{

System.out.println( x + " " + y);

}

if(x==1) {

x++;

}

}

}

}

OUTPUT

0 4

0 3

1 4

1 3

3 4

3 3