convert string as key value pair and make it into one single line in java
I want to split string by colon and make it into key and value pairs. For that in convert function, I took a line and made it into key and value pairs.
I want to convert the line variable. The problem is in the convert function. It’s not converting as expected. It must show as expected Output shown below. I don’t want to split the code as a new line for every key-value pair. I want to do it by a comma in the same line.
Code is
import java.util.HashMap; import java.util.Map; import com.google.common.base.Splitter; public class stack { public static Map<String, String> convert(String str, String SplitByWhat) { String[] tokens = str.split(SplitByWhat); Map<String, String> map = new HashMap<>(); for (int i = 0; i < tokens.length - 1;) { map.put(tokens[i++], tokens[i++]); } return map; } public static void main(String[] args) { String line = "Name : Md . Abdur Rab , CI : Marketing Petroleum Products , In : May 2013 , Hpc : President , Bd : April 14 , Bg : B + , Wd : October 10 , Sp : Quazi Manzida Rab , Bd : August 22 , Bg : B + , Ma : 689 Bara Moghbazar Dhaka - 1217 , Tel : ( 0 ) 935 1684 835 0818 , Mob : 01819 247 932 , Email : [email protected]"; Iterable<String> result = Splitter.on(" , ").trimResults().split(line); for (String v : result) { Map<String, String> response = convert(v, ":"); System.out.println(response); } } } Output is
{Name = Md . Abdur Rab} {CI = Marketing Petroleum Products} {In = May 2013} {Hpc = President} {Bd = April 14} {Bg = B +} {Wd = October 10} {Sp = Quazi Manzida Rab} {Bd = August 22} {Bg = B +} {Ma = 689 Bara Moghbazar Dhaka - 1217} {Tel = ( 0 ) 935 1684 835 0818} {Mob = 01819 247 932} {Email = [email protected]} Expected Output
{Name = Md . Abdur Rab, CI = Marketing Petroleum Products, In = May 2013, Hpc = President, Bd = April 14, Bg = B +, Wd = October 10, Sp = Quazi Manzida Rab, Bd = August 22, Bg = B +, Ma = 689 Bara Moghbazar Dhaka - 1217, Tel = ( 0 ) 935 1684 835 0818, Mob = 01819 247 932, Email = [email protected]} 
You are creating a new map each time you call convert() and printing that out, so you are printing a map for each line separated by ‘,’.
What you want to do is something along the lines of:
public static void main(String[] args) { String line = ... Iterable<String> result = Splitter.on(" , ").trimResults().split(line); Map<String, String> response - new HashMap<>(); for (String v : result) { response.put(convert(v, ":")); } System.out.println(response); } where convert() returns type Entry<String, String>.
See: https://docs.oracle.com/javase/8/docs/api/java/util/Map.Entry.html
Hello, I modified your code to print exactly what you wanted, so try this code:
public static Map<String, String> convert(String str, String SplitByWhat) { String[] tokens = str.split(SplitByWhat); Map<String, String> map = new HashMap<>(); for (int i = 0; i < tokens.length - 1;) { map.put(tokens[i++], tokens[i++]); } return map; } public static void main(String[] args) { String line = "Name : Md . Abdur Rab , CI : Marketing Petroleum Products , In : May 2013 , Hpc : President , Bd : April 14 , Bg : B + , Wd : October 10 , Sp : Quazi Manzida Rab , Bd : August 22 , Bg : B + , Ma : 689 Bara Moghbazar Dhaka - 1217 , Tel : ( 0 ) 935 1684 835 0818 , Mob : 01819 247 932 , Email : [email protected]"; Iterable<String> result = Splitter.on(" , ").trimResults().split(line); String response = ""; for (String v : result) { response += convert(v, ":"); } response = response.replace("{",""); response = response.replace("}",", "); response = "{" + response + "}"; System.out.println(response); } Have fun, I hope I could help you!
