Question

WRITE A JAVA PROGRAM (WILL GUARANTEE A THUMBS UP)

BELOW IS WHAT SHOULD BE INCLUDED IN THE CODE:

Map m1 = new HashMap();

m1.put("firstName","f1");

m1.put("lastName","l1");

m1.put("middleName","m1");

Map m2 = new HashMap();

m2.put("firstName","f2");

m2.put("lastName","l2");

m2.put("middleName","m2");

BELOW IS THE EXPECTED OUTPUT IF GETTING ALL THE VALUES FROM THE INPUT:

String strOut = [f1.l1.m1][email protected];[f2.l2.m2][email protected]

BELOW IS THE EXPECTED OUTPUT IF LAST NAME IS NULL:

String strOut = [f1.m1][email protected];[f2.m2][email protected]

Answer 1

package mis1;

import java.util.HashMap;

import java.util.Map;

import java.util.Set;

import java.util.stream.IntStream;

public class Driver {

public static void print(Map m1){

String strOut="["; //make string with [

Set<String> keys=m1.keySet(); //get all the keys here in set

int i=1;

for(String s:keys){ //go through all they key

if(i==keys.size()) { //if this the last

if(m1.get(s)!=null) //if value if not null

strOut+=m1.get(s)+"]"; //as per example put ] along with value of that key

}

else{

if(m1.get(s)!=null) //if value if not null

strOut+=m1.get(s)+".";//value of that key

}

i++;

}

i=1;

for(String s:keys){ //this for the second part of they string

if(i==keys.size())

strOut+=m1.get(s)+"@abc.com";

else{

strOut+=m1.get(s)+".";

}

i++;

}

System.out.print(strOut);

}

//this method will print both m1 and m2

public static void print(Map m1,Map m2){

//call print tow times

print(m1);

System.out.print(";");

print(m2);

System.out.println("");

}

//driver program to test

public static void main(String[] args) {

Map m1 = new HashMap();

m1.put("firstName","f1");

m1.put("lastName","l1");

m1.put("middleName","m1");

Map m2 = new HashMap();

m2.put("firstName","f2");

m2.put("lastName","l2");

m2.put("middleName","m2");

print(m1,m2);

m1 = new HashMap();

m1.put("firstName","f1");

// m1.put("lastName","l1");

m1.put("middleName","m1");

m2 = new HashMap();

m2.put("firstName","f2");

m2.put("lastName","l2");

m2.put("middleName","m2");

print(m1,m2);

}

}

output

[f1.l1.m1][email protected];[f2.l2.m2][email protected]

[f1.m1][email protected];[f2.l2.m2][email protected]