Пишет, что неверная конструкция у: b + 2;.
package com.javarush.task.task04.task0434;
/*
Таблица умножения Ӏ Java Syntax: 4 уровень, 10 лекция
*/
public class Solution {
public static void main(String[] args) {
int a = 1;
while (a<10)
{
System.out.print(a+" ");
a++;
}
System.out.println(" ");
int b =2;
while (b<20)
{
System.out.print(b+" ");
b + 2;
}
System.out.println(" ");
int c = 3;
while (c<30)
{
System.out.print(c+" ");
c+3;
}
System.out.println(" ");
int d=4;
while (d<40)
{
System.out.print(d+" ");
d+4;
}
System.out.println("");
int e= 5;
while (e<50)
{
System.out.print(e+" ");
e+5;
}
System.out.println(" ");
int f=6;
while (f<60)
{
System.out.print(f+" ");
f+6;
}
System.out.println(" ");
int r=7;
while (r<70)
{
System.out.print(r+" ");
r+7;
}
System.out.println(" ");
int u= 8;
while (u<80)
{
System.out.print(u+" ");
u+8;
}
System.out.println(" ");
int i = 9;
while (i<90)
{
System.out.print(i+" ");
i+9;
}
System.out.println(" ");
int k =10;
while (k<100)
{
System.out.print(k+" ");
k+10;
}
}
}