![]() You notice there, remember someone asked, well, how will you know what it is later? You see this little gray part, so IntelliJ is telling me Java has inferred this as an integer of arrays, okay? All right, I'm gonna leave it as that because I want you to have that as an example. ![]() > Angie Jones: And then I could say var because it will infer. So if I say public static int generateNumbers(), So right now it would bark, but lets write generateNumbers, at least the header for that. > Angie Jones: Okay, it can if generateNumbers is written. > Audience: Can int be written as var here? So we'll make it of integers, we'll call it ticket, and I'm gonna call a new method that we have not written yet to say generateNumbers. All right, question on constants? All right, so I made the main method, and inside of here we're going to create an array. ![]() So we'll do a static final, and we'll call this one MAX_TICKET_NUMBER, and that was 69. The other constant I wanna make is the maximum number that can be on the lottery ticket. And it's good if they're able to read it and know what's going on, right? All right, so all right, we made the length. But you lose a little bit of context with other Java developers, all right? And for those of you who code in other languages, you know that someone will have to modify this at some point. Now, I don't have to write it like that, I could have written it all in lower case. All caps, that means a constant, final variable, okay? > Angie Jones: They see it in all caps, you know immediately, by just like any other convention in Java, you know what it is. When people use this later on within the same program, I feel good about that by writing in all caps. So this is something like, I know length will never change because the lottery tickets only hold 6 numbers. Constant means this is a variable that should not be changed, okay? It cannot be changed because I used the word final here. What I've done here is declare what's known as a constant. And then I'm gonna define this variable in all caps, and this is gonna be the length of the array, 6. Well, I'm pulling out all the big guns, and I'm gonna use the data type. So I'm gonna make private, I am going to use static, I'm going to use final. > Angie Jones: All right, so I wanna do something different with my global variables this time, I'll show you. And inside of here, we'll create a new class that we're calling LotteryTicket. > Angie Jones: So let's create a new package, this one we'll call arrays. It's gonna generate a lottery ticket with 6 random numbers between 1 and 69, all right, y'all ready? This should be a fun program to write. If anyone happens to use this and they win something, they have to give me a small portion of the winnings, okay? If it's five bucks, I'll take one buck, all right? So we're gonna create a lotteries quick pick application. > Angie Jones: So we're gonna write a lottery ticket program. Source Code import import from the "Random Number Array" Lesson For applications requiring more secure random numbers, such as cryptography, it may be necessary to use a different approach. However, it is worth noting that the Random class generates pseudorandom numbers, which means that the sequence of numbers generated is deterministic and can be predicted if the seed value of the Random object is known. Overall, this program is a simple way to generate random numbers within a specified range in Java using the Random class. ![]() The loop iterates five times and prints each random number on a new line using (). The nextInt(max_range) method of the Random object is used to generate random numbers between 0 (inclusive) and max_range (exclusive). ![]() The program uses a for loop to generate five random numbers within the range specified by the user. It then prompts the user to enter the maximum range for the random numbers to be generated. The program starts by creating a Scanner object to read input from the user and a Random object to generate random numbers. The program uses the Scanner and Random classes from the Java utility package to get input from the user and generate random numbers. This Java program generates five random numbers within a range specified by the user. Write Java program to Generate Random Numbers from 0 to given Range ![]()
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