lesson1

Frame10.java

package lesson1;

public class Frame10 {

	public static void main(String[] args) {
		
		int secIn3Week = 60 * 60 * 24 * 7 * 3;
		System.out.println(secIn3Week);
	}

}

Frame13.java

package lesson1;

public class Frame13 {

	public static void main(String[] args) {
		
		System.out.println(299792458.0 * 100 / 1000000000);
	}

}

Frame14.java

package lesson1;

public class Frame14 {

	public static void main(String[] args) {
		
		double c = 299792458;
		double ops = 2200000000d;
		System.out.println(c * 100 / ops);
	}

}

Frame29.java

package lesson1;

public class Frame29 {

	public static void main(String[] args) {
		
		String str1 = "It's a wonderful world! ";
		String str2 = "Yes!";
		String str3 = "   ";
		int i = 111;
		
		System.out.println(str1);
		System.out.println(str1 + str2);
		System.out.println(str1 + i);
		System.out.print(str1);
		System.out.println(str3);
	}

}

Frame30.java

package lesson1;

public class Frame30 {

	public static void main(String[] args) {
		
		String name = "Anna";
		System.out.println(name.length());
	}

}

Frame32.java

package lesson1;

public class Frame32 {

	public static void main(String[] args) {
		
		String mjQuote = "I've failed over and over and over again in my life and that is why I succeed!";
		
		System.out.println(mjQuote.charAt(mjQuote.length()-1));
	}

}

Frame34.java

package lesson1;

public class Frame34 {

	public static void main(String[] args) {
		
		String mjQuote = "I've failed over and over and over again in my life and that is why I succeed!";
		System.out.println(mjQuote.substring(mjQuote.indexOf("succeed"), mjQuote.indexOf("succeed") + "succeed".length()));
		
	}

}

Frame35.java

package lesson1;

public class Frame35 {

	public static void main(String[] args) {
		String mjQuote = "I've failed over and over and over again in my life and that is why I succeed!";
		
		System.out.println(mjQuote.substring(mjQuote.indexOf("again"), mjQuote.indexOf("again") + "again".length()));
	}

}

Frame38.java

package lesson1;

public class Frame38 {

	public static void main(String[] args) {
		
		String mtQuote = "Let us always meet each other with smile, for the smile is the beginning of love.";
		
		System.out.println(mtQuote.replaceAll("smile", ":)"));

	}

}

Homework3.java

package lesson1;

public class Homework3 {

	public static void main(String[] args) {
		
		long milliInSec, days, hours, min, sec;
		
		milliInSec = System.currentTimeMillis() / 1000;
		days = milliInSec / (24 * 60 * 60);
		hours = (milliInSec % (24 * 60 * 60)) / (60 * 60);
		min = (milliInSec % (60 * 60)) / 60;
		sec = milliInSec % 60;
		
		System.out.println(days + " : " + hours + " : " + min + " : " + sec);
	}

}

Homework5.java

package lesson1;

public class Homework5 {

	public static void main(String[] args) {
		
		double value = 36.6;
		String valueToString = String.valueOf(value);
		int dotIndex = valueToString.indexOf(".");
		
		System.out.println(valueToString.substring(0, dotIndex));
		System.out.println(valueToString.substring(dotIndex + 1));

	}

}

Homework6.java

package lesson1;

public class Homework6 {

	public static void main(String[] args) {
		
		String s = "Education is the most powerful weapon which you can use to change the world.";
		String t = "An investment in knowledge pays the best interest.";
		
		System.out.print(s.substring(s.indexOf("use"), s.indexOf("use") + ("use").length()) + " ");
		System.out.print(t.substring(t.indexOf("knowledge"), t.indexOf("knowledge") + ("knowledge".length())) + " ");
		System.out.println(s.substring(s.indexOf("to change the world"), s.indexOf("to change the world") +
				+ ("to change the world").length()));

	}

}