последние пункт ?
package com.javarush.task.task19.task1911;
import java.io.PrintStream;
import java.io.ByteArrayOutputStream;
import java.io.ByteArrayOutputStream;
/*
Ридер обертка
*/
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);
testString.printSomething();
String result = stream.toString().toUpperCase();
System.setOut(consoleStream);
System.out.println(result);
}
public static class TestString {
public void printSomething() {
System.out.println("it's a text for testing");
}
}
}