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Objektorienteeritud programmeerimine (LTAT.03.003)

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Mis ilmub ekraanile?

import java.util.Iterator;

import java.util.LinkedList;

import java.util.List;

public class TestLinkedList {

public static void main(String[] args) {

List<Integer> llist = new LinkedList<>();

llist.add(2);

llist.add(8);

llist.add(5);

llist.add(1);

Iterator listIterator = llist.listIterator();

while (listIterator.hasNext()) {

System.out.print(listIterator.next() + " ");

}

}

}
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Mis ilmub ekraanile?

import java.util.HashSet;

import java.util.Set;

public class TestSet {

public static void main(String[] args){

Set<Object> s = new HashSet<>();

s.add(10);

s.add(10L);

for(Object object : s){

System.out.println("Test - " + object);

}

}

}
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Eeldades, et kõik vajalikud import-id on olemas, milliste valikute puhul järgnev kood kompileerub, kui need (ühe kaupa) lisada //rida1 asemele?

class A {}

class B extends A {}

class C extends B {}

public class Test {

public List<? super B> test(){

//rida1

}

}
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Kuidas sorteerida LinkedList-tüüpi listi listObj elemendid?

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Mis ilmub ekraanile?

import java.util.Map;

import java.util.TreeMap;

public class TestTreeMap {

public static void main(String args[]) {

Map<Integer, String> obj = new TreeMap<>();

obj.put(5, "A");

obj.put(1, "B");

obj.put(3, "C");

System.out.println(obj.entrySet());

}

}
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Kas on lubatud?

public class Kast<Tuup>  {

private Tuup t;

public void add(Tuup t) {

this.t = t;

}

public Tuup get() {

return t;

}

}
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Eeldades, et kõik vajalikud import-id on olemas, milliste valikute puhul järgnev kood kompileerub, kui need (ühe kaupa) lisada //rida1 asemele?

class A {}

class B extends A {}

class C extends B {}

public class Test {

public List<? extends B> test(){

//rida1

}

}
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Sea vastavusse andmestruktuur ja elemendi eemaldamise meetod.

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Millise meetodiga saab kujutusest eemaldada kõik võti-väärtus paarid?

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Milliseid liideseid realiseerib klass LinkedList?

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