java-Set exercises 1

The first problem (map) uses map to complete the following functions:

Reads a string from the command line, indicating a year, which team is the winner of the World Cup. If the World Cup is not held in that year, the output: No World Cup is held.

Attached: the World Cup title and the corresponding title year, please refer to the Appendix of this chapter. Appendix

1. Previous World Cup champions

Number of sessions	Year held	Host Location	Champion
First session	1930	Uruguay	Uruguay
Second session	1934	Italy	Italy
Third session	1938	France	Italy
Session Four	1950	Brazil	Uruguay
Session Five	1954	Switzerland	Sid
Session VI	1958	Sweden	Brazil
vii	1962	Chile	Brazil
The first	1966	England	England
Ninth session	1970	Mexico	Brazil
Tenth session	1974	Former West German	Sid
11th session	1978	Argentina	Argentina
12th Session	1982	Spain	Italy
13th session	1986	Mexico	Argentina
14th session	1990	Italy	Sid
15th session	1994	United States	Brazil
16th session	1998	France	France
17th session	2002	Korean-Japanese	Brazil
18th session	2006	Germany	Italy
19th session	2010	South Africa	Spain
20th session	2014	Brazil	Germany

Based on the original World Cup map, add the following features: Read the name of a team and output a list of the years the team won the championship. For example, read "Brazil", should output 1958 1962 1970 1994 2002 read "Holland", should output did not win the World Cup

 PackageCom.jihelianxi;ImportJava.util.HashMap;ImportJava.util.Map;ImportJava.util.Scanner; Public classTESTSJB { Public Static voidMain (string[] args) {Map<String,String> ma=NewHashmap<>(); Ma.put ("1930", "Uruguay" ); Ma.put ("1934", "Italy" ); Ma.put ("1938", "Italy" ); Ma.put ("1950", "Uruguay" ); Ma.put ("1954", "Sid" ); Ma.put ("1958", "Brazil" ); Ma.put ("1962", "Brazil" ); Ma.put ("1966", "England" ); Ma.put ("1970", "Brazil" ); Ma.put ("1934", "Sid" ); Scanner SC=NewScanner (system.in); System.out.println ("Enter Year:"); String St=Sc.nextline (); if(Ma.containskey (st) = =true) {System.out.println (St+ "Crown Country is:" +Ma.get (ST)); }        Else{System.out.println (St+ "Not hosting the World Cup"); } Scanner SC1=NewScanner (system.in); System.out.println ("Please enter the Championship team"); String str1=Sc1.nextline (); if(Ma.containsvalue (str1) = =false) {System.out.println (str1+ "The team has not won the championship"); }        Else{System.out.println (str1+ "The winning year for the team is:");  for(String str:ma.keySet ()) {if(Ma.get (str). Equals (str1)) {System.out.print (str+" "); }            }                    }            //traversing the Keyset collection for value//For (String st:ma.keySet ())//        {//String B=ma.get (ST);//        }//        //System.out.println ("Input country name:");//String str=sc.nextline ();//for (int i=0;i<ma.size (); i++)//        {//if (b.equals (str))//            {//System.out.println (ST);//            }//Else//            {//System.out.println ("Did not win the World Cup");//            }//        }                            }}

java-Set exercises 1