PrintingContainer.java

PrintingContainer.java

import java.util.*;

public class PrintingContainers {
static Collection fill(Collection c) {
c.add("dog");
c.add("dog");
c.add("cat");
return c;
}

static Map fill(Map m) {
m.put("dog", "Bosco");
m.put("dog", "Spot");
m.put("cat", "Rags");
return m;
}

public static void main(String[] args) {
System.out.println(fill(new ArrayList()));
System.out.println(fill(new HashSet()));
System.out.println(fill(new HashMap()));
}
}

PrintingContainer.java output

[dog, dog, cat]
[dog, cat]
{dog=Spot, cat=Rags}

Tag: Study Code Program Java