Java Collections.frequency() And Collections.disjoint() Methods

1. CREATE ARRAY AND POPULATE IT
2. CREATE LIST AND COPY ARRAY CONTENTS TO IT
3. CREATE SECOND LIST
4. POPULATE IT
5. DISPLAY CONTENTS
6. COPY LIST 1 CONTENTS TO LIST 2
7. DISPLAY CONTENTS
8. CHECK LIST2 TO SEE HOW MANY TIMES A STRING APPEARS
9. DISPLAY CONTENTS
10. COMPARE 2 LISTS AND RETURN TRUE OR FALSE
11. DISPLAY CONTENTS

------------------CODE-----------------

import java.util.Collections;
import java.util.List;
import java.util.ArrayList;
import java.util.Arrays;


class addAll
{
public static void main(String args[])
{
String[] stuff={"Apples","Lemons","Shoes","Pigs"};
List<String> list1 =Arrays.asList(stuff);


ArrayList<String> list2 = new ArrayList<String>();
list2.add("Facebook");
list2.add("Twitter");
list2.add("Youtube");
list2.add("LinkedIn");


// SHOW CONTENTS OF LIST 2 BEFORE ADDING STUFF
for(String x: list2)
System.out.printf("%s ",x);


///ADDS CONTENTS OF STUFF LIST TO THE LIST2 LIST

Collections.addAll(list2,stuff);

// SHOW CONTENTS OF LIST 2 AFTER ADDING STUFF
System.out.println();
for(String x: list2)
System.out.printf("%s ",x);


//CHECK LIST 2 TO SEE HOW MANY TIMES APPLES APPEAR
System.out.println();
System.out.println("NUMBER IF TIME IT APPEARS : "+Collections.frequency(list2,"Apples"));

//Colletions.disjoint COMPARES 2 LISTS AND IF THEY 

HAVE SOMETHING IN COMMON IT WILL RETURN FALSE

boolean tof = Collections.disjoint(list1,list2);

if(tof)
System.out.println("Lists Must Have Nothing In Common!");
else
System.out.println("Lists Must Have Something In Common!");
}
}


}
}

--------------OUTPUT-----------------------------


Facebook Twitter Youtube LinkedIn
Facebook Twitter Youtube LinkedIn Apples Lemons Shoes Pigs
NUMBER IF TIME IT APPEARS : 1
Lists Must Have Something In Common!