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    <pre><code>package com.infinitegraph.samples.hellograph; // Import all InfiniteGraph packages import java.io.BufferedReader; import java.io.FileReader; import java.io.IOException; import com.infinitegraph.*; import org.json.simple.JSONObject; import org.json.simple.parser.JSONParser; import org.json.simple.parser.ParseException; // Import SLF4J logging packages import org.slf4j.Logger; import org.slf4j.LoggerFactory; import com.infinitegraph.BaseVertex; import java.util.HashMap; public class HelloGraph { public static void main(String[] args) { BufferedReader br = null; JSONParser parser = new JSONParser(); // Set up logging for the HelloGraph class Logger logger = LoggerFactory.getLogger(HelloGraph.class); // Create null transaction, null graph database instance Transaction tx = null; GraphDatabase helloGraphDB = null; // Name for graph database and property file String graphDbName = "HelloGraph"; String propertiesFileName = "HelloGraph.properties"; try { try { // Delete graph database if it already exists GraphFactory.delete(graphDbName, propertiesFileName); } catch (StorageException sE) { logger.info(sE.getMessage()); } // HINT: Add code to create graph database and its contents // Create graph database logger.info("&gt; Creating graph database ..."); GraphFactory.create(graphDbName, propertiesFileName); // Open graph database logger.info("&gt; Opening graph database ..."); helloGraphDB = GraphFactory.open(graphDbName, propertiesFileName); // Begin transaction logger.info("&gt; Starting a read/write transaction ..."); tx = helloGraphDB.beginTransaction(AccessMode.READ_WRITE); //create head vertex HeaderVertex head = new HeaderVertex("JSON File"); helloGraphDB.addVertex(head); try { String sCurrentLine; br = new BufferedReader(new FileReader("C:/Users/ji/Desktop/example3.json")); HashMap&lt;String, Integer&gt; map = new HashMap &lt;String, Integer&gt;(); while ((sCurrentLine = br.readLine()) != null) { Object obj; try { obj = parser.parse(sCurrentLine); JSONObject jsonObject = (JSONObject) obj; //code to create vertex logger.info("&gt; Creating Start vertices ..."); String start = (String) jsonObject.get("start"); StartVertex startV = new StartVertex(start); if (!map.containsKey(start)) { map.put(start,1); helloGraphDB.addVertex(startV); } //System.out.println(end); String end = (String) jsonObject.get("end"); EndVertex endV = new EndVertex(end); helloGraphDB.addVertex(endV); String rel = (String) jsonObject.get("rel"); //System.out.println(rel); logger.info("&gt; Creating Relationship edge ..."); Relationship relationship1 = new Relationship(""); Relationship relationship2 = new Relationship(rel); // Connect edges logger.info("&gt; Connecting vertices ..."); startV.addEdge(relationship1, head, EdgeKind.BIDIRECTIONAL, (short) 0); endV.addEdge(relationship2, startV, EdgeKind.BIDIRECTIONAL, (short) 0); } catch (ParseException e) { // TODO Auto-generated catch block e.printStackTrace(); } } } catch (IOException e) { e.printStackTrace(); } finally { try { if (br != null)br.close(); } catch (IOException ex) { ex.printStackTrace(); } } // Specify a named root for traversal logger.info("&gt; Naming a root vertex ..."); helloGraphDB.nameVertex("JSON File", head); // Commit to save your changes to the graph database logger.info("&gt; Committing changes ..."); tx.commit(); } catch (ConfigurationException cE) { logger.warn("&gt; Configuration Exception was thrown ... "); logger.error(cE.getMessage()); } finally { // If the transaction was not committed, complete // will roll it back if (tx != null) tx.complete(); if (helloGraphDB != null) { helloGraphDB.close(); logger.info("&gt; On Exit: Closed graph database"); } } } } // HINT: Add class definitions for Person and Meeting classes here. class HeaderVertex extends BaseVertex { private String header; public HeaderVertex (String header) { setStartName(header); } public void setStartName (String header) { markModified(); this.header = header; } public String toString() { fetch(); return this.header; } } class StartVertex extends BaseVertex { private String start; public StartVertex (String start) { setStartName(start); } public void setStartName (String start) { markModified(); this.start = start; } public String toString() { fetch(); return this.start; } } class EndVertex extends BaseVertex { private String end; public EndVertex (String end) { setEndVertex(end); } public void setEndVertex (String end) { markModified(); this.end = end; } public String toString() { fetch(); return this.end; } } class Relationship extends BaseEdge { private String rel; public Relationship (String rel) { setRelationship(rel); } public void setRelationship (String rel) { markModified(); this.rel = rel; } public String toString() { fetch(); return this.rel; } } </code></pre>
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    1. POHow to remove duplicates elements from JSON file using java if else?
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    1. USuser1699351
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    1. COdeclare your map variables outside the while loop. Inside a while loop they will be initialized for every iteration and you will get duplicates.
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    2. CO@faizan do you mean this? but still cant..
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    3. COI said outside the while loop,its still inside.
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Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

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