random Archives - Page 10 of 10

possible lossy conversion from long to int?

That’s because a long is 64 bits and an int is 32 bits, not to mention you’re going from floating-point to integer. To go from long to int, you’re going ...

April 6, 2022
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Java Generate Random Number Between Two Given Values

You could use e.g. r.nextInt(101) For a more generic “in between two numbers” use: Random r = new Random(); int low = 10; int ...

April 6, 2022
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Random shuffling of an array

Using Collections to shuffle an array of primitive types is a bit of an overkill… It is simple enough to implement the function ...

April 6, 2022
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Creating a random string with A-Z and 0-9 in Java

Here you can use my method for generating Random String protected String getSaltString() { String SALTCHARS = "ABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890"; StringBuilder salt = new StringBuilder(); ...

April 5, 2022
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Creating random numbers with no duplicates

The simplest way would be to create a list of the possible numbers (1..20 or whatever) and then shuffle them with Collections.shuffle. Then ...

April 4, 2022
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Generate a random double in a range

April 4, 2022
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Problems Generating A Math.random Number, Either 0 or 1

You could use boolean values of 0 or 1 based on value of Math.random() as a double between 0.0 and 1.0 and make the random ...

April 3, 2022
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