//https://prnt.sc/zfbdivs7G2AC

//https://www.onlinegdb.com/online_java_compiler

public static void main(String[] args) {

int x = (10*10)-10;

System.out.println(x);

}

{

public static void main(String[] args) {

int[] Array = {2,7,0,9,0,6,5,4,0,1,0,0};

for(int i=0; i<Array.length-1; i++){

if(Array[i] != 0){

System.out.print(Array[i]);

}else if (Array[i] ==0 && Array[i+1]==0) {

System.out.print(Array[i]);

}

if(i == Array.length) {

break;

}

}

******************************

=================================

class First {

int i = 10;

public First(int j) {

System.out.println(i);

this.i = j * 10;

}

}

class Second extends First {

public Second(int j) {

super(j);

System.out.println(i);

this.i = j * 20;

}

}

public class MainClass {

public static void main(String[] args) {

Second n = new Second(20);

System.out.println(n.i);

}

}

============================================

class First {

public First() {

System.out.println("a");

}

}

class Second extends First {

public Second() {

System.out.println("b");

}

}

class Third extends Second {

public Third() {

System.out.println("c");

}

}

public class MainClass {

public static void main(String[] args) {

Third c = new Third();

}

}

=============================

public class MathTest {

public void main(String[] args) {

int x = 10*10-10;

System.out.println(x);

}

}