java - Search String in Txt File -


we wrote code in class , i'm having trouble understanding/manipulating it. want modify take user input, instead of searching whole file, , print out position of word in file. 

import java.io.bufferedreader; import java.io.datainputstream; import java.io.fileinputstream; import java.io.filenotfoundexception; import java.io.ioexception; import java.io.inputstreamreader; import java.util.arraylist; import java.util.collections; import java.util.comparator; import java.util.hashmap; import java.util.list; import java.util.map; import java.util.set; import java.util.stringtokenizer; import java.util.map.entry;  public class assingment7 {      public map<string, integer> getwordcount(string filename){          fileinputstream fis = null;         datainputstream dis = null;         bufferedreader br = null;         map<string, integer> wordmap = new hashmap<string, integer>();         try {             fis = new fileinputstream(filename);             dis = new datainputstream(fis);             br = new bufferedreader(new inputstreamreader(dis));             string line = null;             while((line = br.readline()) != null){                 stringtokenizer st = new stringtokenizer(line, " ");                 while(st.hasmoretokens()){                     string tmp = st.nexttoken().tolowercase();                     if(wordmap.containskey(tmp)){                         wordmap.put(tmp, wordmap.get(tmp)+1);                     } else {                         wordmap.put(tmp, 1);                     }                 }             }         } catch (filenotfoundexception e) {             e.printstacktrace();         } catch (ioexception e) {             e.printstacktrace();         } finally{             try{if(br != null) br.close();}catch(exception ex){}         }         return wordmap;     }      public list<entry<string, integer>> sortbyvalue(map<string, integer> wordmap){          set<entry<string, integer>> set = wordmap.entryset();         list<entry<string, integer>> list = new arraylist<entry<string, integer>>(set);         collections.sort( list, new comparator<map.entry<string, integer>>()         {             public int compare( map.entry<string, integer> o1, map.entry<string, integer> o2 )             {                 return (o2.getvalue()).compareto( o1.getvalue() );             }         } );         return list;     }      public static void main(string a[]){         assingment7 mdc = new assingment7();         map<string, integer> wordmap = mdc.getwordcount("c://fox.txt");         list<entry<string, integer>> list = mdc.sortbyvalue(wordmap);         for(map.entry<string, integer> entry:list){             system.out.println(entry.getkey()+" ==== "+entry.getvalue());         }     } }

any thoughts?

you change main method - user enters string want search in console, , if key found in map, outputs the value associated it.

public static void main(string a[]) {     assingment7 mdc = new assingment7();     map<string, integer> wordmap = mdc.getwordcount("c://fox.txt");     list<entry<string, integer>> list = mdc.sortbyvalue(wordmap);      bufferedreader br = new bufferedreader(new inputstreamreader(system.in));      string input = null;      try {       input = br.readline();     } catch (ioexception e) {       system.out.println(e.getmessage());     }      for(map.entry<string, integer> entry:list) {         if(entry.getkey().equalsignorecase(input)){             system.out.println(entry.getkey() + " ==== " + entry.getvalue());         }     } }

Comments

Post a Comment

Popular posts from this blog

android - Get AccessToken using signpost OAuth without opening a browser (Two legged Oauth) -

i using signpost oauth access data magento server. have read various tutorials on same , reach point open browser user can enter credentials. however, per requirement have automate part. hence, user should not browser page. have set-up done on server side ( magento ), hit url , returned call page. same through program in android. i have tried below, consumer = new commonshttpoauthconsumer(key, secret); provider = new commonshttpoauthprovider(oauth_init_url,access_token_url, authorize_url); try { provider.retrieverequesttoken(consumer, oauth.out_of_band); log.d("tokens" , consumer.gettoken() + " -- " + consumer.gettokensecret()); } and request tokens. dont know how bypass next step. tried directly accessing accesstoken (stupid of me) provider.retrieveaccesstoken(consumer, "mycallback://callback"); no luck, ends in oauth.signpost.exception.oauthnotauthorizedexception: authorization failed (server replied 401). ...
Read more

org.mockito.exceptions.misusing.InvalidUseOfMatchersException: mockito -

getting error org.mockito.exceptions.misusing.invaliduseofmatchersexception: invalid use of argument matchers! 1 matchers expected, 2 recorded. exception may occur if matchers combined raw values: //incorrect: somemethod(anyobject(), "raw string"); when using matchers, arguments have provided matchers. example: //correct: somemethod(anyobject(), eq("string matcher")); at when( getprogramservice .callservice(any(getprogramtype.class))) .thenreturn(jaxbresponse); please explain error , possible resolution the code posted looks fine; don't see problem it. code before or above causing exception. key here: invalid use of argument matchers! 1 matchers expected, 2 recorded. any , used above, doesn't return "special kind of null" or "special kind of getprogramtype"; don't exist. instead, returns null , side effect puts matcher on stack. whe...
Read more

google shop client API returns 400 bad request error while adding an item -

i'm working on solution add items in google shopping market java application. following tutorial real mess because of missing classes of laste release, after setting 1.5-beta maven managed make base example typecheck correctly classes. still can make simple task of adding 1 item. instead of posting whole code i'm posting part creates product feed. private product createproduct(string id) { product product = new product(); product.title = "red wool sweater"; product.content = new content( "text", "comfortable , soft, sweater keep warm on " + "cold winter nights. red , blue stripes."); product.appcontrol = new appcontrol(); product.appcontrol.addrequireddestination("productads"); product.externalid = id; product.lang = "it"; product.country = "it"; product.condition = "nuovo"; product.price = new price("eu...
Read more