Two simple Java programs

So far I’m still a newbie Java programmer and I am mostly familiar with the basics (the syntax and basic concepts) therefore I thought I could practice my little knowledge by writing two simple programs. In particular, this task helped me to get more familiar with user input, random number generation and arrays. I took the idea from a website, however I lost the bookmark therefore I can not post it.

The first program is quite simple. It asks you to guess a number within 0 and 99. Many improvements could be done to this simple program, perhaps in the future I’ll work on it.

Here it is:

	import java.util.Scanner;
	import java.util.Random;
	public class GuessNumberMain
	{
	public static void main(String[] args)
	{
	System.out.println("Guess the number beween 0 and 99");
	Scanner reader = new Scanner(System.in);
	int number = reader.nextInt();
	Random randomGenerator = new Random();
	int toGuess = randomGenerator.nextInt(100);
	while(number != toGuess)
	{
	if(number < toGuess)
	{
	System.out.println("Higher");
	}else if(number > toGuess)
	{
	System.out.println("Lower");
	}
	System.out.println("Try again!");
	number = reader.nextInt();
	}
	System.out.println("Congrats! You guessed it! It was: "+number);
	reader.close();
	}
	}

view raw guessnumber.java hosted with ❤ by GitHub

The second program is a little bit more complex, it asks for an input sentence from the user and then it outputs a sentence of the same length using random part of the entered sentence.

	import java.util.Scanner;
	import java.util.Random;
	public class SentenceGeneratorMain
	{
	public static void main(String[] args)
	{
	//Variables declaration and initialization
	Scanner reader = new Scanner(System.in);
	String input = new String();
	String reply = new String();
	Random rGenerator = new Random();
	boolean again = true;
	boolean first = true;
	//Program description
	String description = "This simple program takes a sentence as input and then\n"
	+ "it prints another sentence of the same length placing the words\n"
	+ "in a random place. Enter a sentence to start. After it has run\n"
	+ "the program asks you if you'd like to play again, enter 'no' to\n"
	+ "terminate the program otherwise enter a random character.\n"
	+ "------------------------------------------------------------------\n"
	+ "Let's start:\n\n";
	//Initial prints
	System.out.println(description);
	System.out.println("Enter a sentence: ");
	//Main loop
	while(again)
	{
	if(!first){System.out.println("Enter a sentence: ");}
	else{first = false;}
	//Reading the input and storing the string as an array
	input = reader.nextLine();
	String[] array = new String[input.split(" ").length];
	for(int i=0; i< array.length; i++)
	{
	array[i] = input.split(" ")[i];
	}
	//Sentence generation
	for(int i=0; i < array.length; i++)
	{
	int k = rGenerator.nextInt(array.length);
	System.out.print(array[k]);
	System.out.print(" ");
	}
	//Play again?
	System.out.println("\nPlay again?");
	reply = reader.nextLine();
	if("no".equals(reply) || "No".equals(reply)){again = false;}
	}
	reader.close();
	}
	}

view raw sentenceGenerator.java hosted with ❤ by GitHub

Hope this was interesting.