ArrayLists contain objects, so instead of using primitive types Create an ArrayList of ints and add some. where T represents a type (Object or primitive) for loop, given an array of n elements arrįor (int i = 0 i arrList = new ArrayList() to loop through an array, you can use a standard for example, to print out the 5th element in the array: Create an array that is initialized with values If it isn't already there, make a new file called Randomizer.java, and copy / paste in the code for the Randomizer class from the CodeHS Java Library.īoolean result = readBoolean("Question? ") īoolean x = !y // x gets the opposite of y Note: To use the Randomizer class, Randomizer.java must be included in your program's files. Randomizer.nextDouble(double low, double high) Randomizer.nextBoolean(double probability) Random double value between low and highĭouble randomValue = Randomizer.nextDouble(low, high) This coin flip has an 80% chance of being trueīoolean coinFlip = Randomizer.nextBoolean(probability) ĭouble chanceOfRain = Randomizer.nextDouble() Random boolean with a probability chance of being true Int roll = Randomizer.nextInt(low, high) īoolean coinFlip = Randomizer.nextBoolean() The Randomizer class provides methods for creating random values X >= y // is x greater than or equal to y Comparison operators return booleans (true/false values) String name = readLine("What is your name? ") īoolean finishedWork = readBoolean("Is your work done? ") You should replace the word prompt with The method below takes in a parameter called Methods can take in values, called parameters.
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