Почему валидатор не принимает данный код? Ругается на 7,8 пункты.
package com.javarush.task.task19.task1911;
/*
Ридер обертка
*/
import java.io.ByteArrayOutputStream;
import java.io.PrintStream;
public class Solution {
public static TestString testString = new TestString();
public static void main(String[] args) {
PrintStream consoleStream = System.out;
ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
PrintStream stream = new PrintStream(outputStream);
System.setOut(stream);
(new TestString()).printSomething();
System.setOut(consoleStream);
String s = outputStream.toString().toUpperCase();
System.out.println(s);
}
public static class TestString {
public void printSomething() {
System.out.println("it's a text for testing");
}
}
}