2019.11.27 -try with resources

Main.java

//Note: This class will not compile yet.
import java.io.*;
import java.util.List;
import java.util.function.Predicate;
import java.util.stream.Collectors;
import java.util.ArrayList;

public class Main {

	private List<Integer> list;
	private static final int SIZE = 20;

	public Main () {
		list = new ArrayList<>(SIZE);
		for (int i = 0; i < SIZE; i++) {
			list.add(i);
		}
		
//		Predicate<Integer> findEvens = new Predicate<Integer>() {
//
//			@Override
//			public boolean test(Integer t) {
//				return (t % 2 == 0);
//			}			
//		};
		//list.removeIf(findEvens);
		//list.removeIf(t -> t%2==0);
		List<Integer> ivan = list.stream().filter(t->t%2==0).collect(Collectors.toList());
		for (var i : ivan) {
			System.out.println("Ivan says: " + i);
		}
	}

	 public void writeList() {
		// The FileWriter constructor throws IOException, which must be caught.
	     try (PrintWriter out = new PrintWriter(new FileWriter("OutFile.txt"))) {
			 //PrintWriter out = new PrintWriter(new FileWriter("OutFile.txt"));
		
		     for (int i = 0; i < list.size(); i++) {
		         // The get(int) method throws IndexOutOfBoundsException, which must be caught.
		         out.println("Value at: " + i + " = " + list.get(i));
		     }
		     //out.close();
	     } catch (IOException e) {
	    	 System.out.println("Oh, look! an IOException just got thrown.");
	     } catch (IndexOutOfBoundsException e) {
	    	 System.out.println("Oops. Index out of bounds. Fix that.");
	     }
	 }

	
	public static void main(String[] a) {
		Main foo = new Main();
		foo.writeList();
	}
}


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