e-tverdokhleb

public class main {
	public static void main(String[] args) {
		String s = "Education is the most powerful weapon witch you can use to change the world.";
		String t = "An investment in knowledge pays the  best interest.";
		
		System.out.println(s.substring(52, 52 + 4) +
						   t.substring(17, 17 + 9) +" " + 
						   s.substring(52 + 4, s.length()-1));
	}	
}

e-tverdokhleb

public class Main {
	public static void main(String[] args) {
		System.out.println(hello("Valera"));
	}

private static String hello(String name){
	return "Hello " + name;
}
}

e-tverdokhleb

public class Main {
	public static void main(String[] args) {
		sum(1,4);
	}

private static void sum(int num1,int num2){
	System.out.println(num1 + num2);
}
}

e-tverdokhleb

public class Main {
	public static void main(String[] args) {
		System.out.println(square(4));
	}

	private static double square(double number) {
		return (number * number);
	}
}

e-tverdokhleb

public class Main {
	public static void main(String[] args) {
		System.out.println(square(4));
	}

	static double square(double number) {
		return (number * number);
	}
	
	static double square(int number){

e-tverdokhleb

public class Main {
	public static void main(String[] args) {
			System.out.println(oldEnogh(2123));
	}

	static boolean oldEnogh(int age) {
		if (age >= 21) {
			return true;
		} else
			return false;

e-tverdokhleb

public class Main {
	public static void main(String[] args) {
		System.out.println(min(14, 112, 13));
	}

	public static int min(int a, int b, int c) {
		int min = a;
		if ((b<a)&&(b<c)) {
			min = b;
		}

e-tverdokhleb

public class Main {
	public static void main(String[] args) {
		System.out.println(min(11, 12, 3));
	}

	public static int min(int a, int b, int c) {
		int min = a;
		if (b < a) {
			min = b;
		} else if (c < a) {

e-tverdokhleb

public class Main {
	public static void main(String[] args) {
		System.out.println(isSpring(4));
	}

	static int isSpring(int month) {
		int result = -1;
		if ((month > 0) && (month <= 12)) {
			if ((month>=3)&&(month<=5)){
				result = 1;

e-tverdokhleb

public class Main {
	public static void main(String[] args) {
		System.out.println(getQuadrant("a", "1"));
	}

	static String getQuadrant(String v, String h) { // means that input data is correct
		String str_v = "abcdefghi";
		return (Integer.valueOf(h) * 64) + "_" + (str_v.indexOf(v) + 1) * 64;
	}
}