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Sample ArrayList
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//'main' method must be in a class 'Rextester'. //Compiler version 1.8.0_111 import java.util.*; import java.lang.*; class Rextester { public static void main(String args[]) { System.out.println("Hello, World!"); new Rextester().hello(); new Rextester().addNumberstoArrayList(); } private ArrayList <Integer> numbers; public Rextester() { numbers = new ArrayList<Integer>(); } public void addNumberstoArrayList() { int numberToAdd = 0; while(numberToAdd <= 40) { numbers.add(numberToAdd); numberToAdd += 2; } for(int number: numbers) { System.out.println(number); } } public String hello() { String hi = "Hello"; System.out.println("hi"); return hi; } }
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Compilation time: 0.52 sec, absolute running time: 0.13 sec, cpu time: 0.13 sec, memory peak: 18 Mb, absolute service time: 0,66 sec
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Hello, World! hi 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40