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2 parents e85b550 + eb324fc commit dbff14e

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‎core-java/jdbc/.gitignore‎

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/target/

‎core-java/jdbc/target/classes/META-INF/MANIFEST.MF‎

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Manifest-Version: 1.0
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Built-By: Admin
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Build-Jdk: 1.8.0_231
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Built-By: vn
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Build-Jdk: 1.8.0_251
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Created-By: Maven Integration for Eclipse
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‎core-java/jdbc/target/classes/META-INF/maven/com.lwl/jdbc/pom.properties‎

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#Generated by Maven Integration for Eclipse
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#Wed Jun 10 07:29:23 IST 2020
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#Sat Jun 13 20:31:42 EDT 2020
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version=0.0.1-SNAPSHOT
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groupId=com.lwl
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m2e.projectName=jdbc
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m2e.projectLocation=C\:\\Users\\Admin\\Desktop\\fs_batch_3\\jdbc
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m2e.projectLocation=D\:\\GIT\\java_full_stack_b_2\\core-java\\jdbc
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artifactId=jdbc

‎junit5/pom.xml‎

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<version>${junit.jupiter.version}</version>
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<scope>test</scope>
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</dependency>
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<dependency>
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<groupId>mysql</groupId>
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<artifactId>mysql-connector-java</artifactId>
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<version>8.0.14</version>
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</dependency>
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<dependency>
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<groupId>com.fasterxml.jackson.core</groupId>
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<artifactId>jackson-databind</artifactId>
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<version>2.11.0</version>
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</dependency>
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<dependency>
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<groupId>com.zaxxer</groupId>
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<artifactId>HikariCP</artifactId>
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<version>3.4.5</version>
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</dependency>
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<dependency>
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<groupId>org.projectlombok</groupId>
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<artifactId>lombok</artifactId>
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<version>1.18.6</version>
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<scope>provided</scope>
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</dependency>
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</dependencies>
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<build>

‎junit5/src/main/java/com/lwl/junit/CSVManager.java‎

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package com.lwl.junit;
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import java.io.File;
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import java.io.FileNotFoundException;
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import java.io.IOException;
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import java.nio.file.Paths;
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import java.util.ArrayList;
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import java.util.List;
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import java.util.Scanner;
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import com.fasterxml.jackson.core.JsonParseException;
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import com.fasterxml.jackson.databind.JsonMappingException;
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public class CSVManager<T> {
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private String filename;
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//private List<T> list = new ArrayList<T>();
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private List<CourseData> list = new ArrayList<CourseData>();
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public CSVManager(String filename) {
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this.filename = filename;
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T t = null;
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Scanner sc;
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try {
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sc = new Scanner(new File(filename));
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//sc.useDelimiter(",");
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sc.nextLine(); // to skip headers
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while (sc.hasNextLine()) {
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String string = sc.nextLine();
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String splitstr[] = string.split(",");
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/* need to make it generic ??
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* if ( T.class == CourseData ) {
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*
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* } t = new T (splitstr[0], splitstr[1],splitstr[2],splitstr[3],splitstr[4],
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* Double.parseDouble(splitstr[5]));
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*/
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CourseData cd = new CourseData(splitstr[0], splitstr[1], splitstr[2], splitstr[3], splitstr[4], Double.parseDouble(splitstr[5]));
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list.add(cd);
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}
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sc.close();
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} catch (IOException e) {
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e.printStackTrace();
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}
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}
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public String getFilename() {
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return filename;
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}
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public List<CourseData> getList() {
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return list;
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}
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/*
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* public static void main(String[] args) { CSVManager csvm = new
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* CSVManager<CourseData>("src/main/resources/coursedata.csv"); }
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*/
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}

‎junit5/src/main/java/com/lwl/junit/CourseData.java‎

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package com.lwl.junit;
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import lombok.*;
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@AllArgsConstructor
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@Getter
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@Setter
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@ToString
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// *** This class holds the course data **
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public class CourseData {
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private String Name;
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private String Batch;
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private String Completed;
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private String Placed;
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private String Degree;
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private Double Score;
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}

‎junit5/src/main/java/com/lwl/junit/CourseDataManager.java‎

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package com.lwl.junit;
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import java.util.HashMap;
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import java.util.List;
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import java.util.Map;
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import java.util.function.Predicate;
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import java.util.stream.Collectors;
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public class CourseDataManager {
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private static List<CourseData> cdArray;
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{
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CSVManager<CourseData> csvm = new CSVManager<CourseData>("src/main/resources/coursedata.csv");
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cdArray = csvm.getList();
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}
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void StudentQualBEMCABSCtest() {
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System.out.println("-----------------------------------------------------------------------------------------------------");
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System.out.println("StudentQualBEMCABSCtest");
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Predicate<CourseData> pd = (c -> (c.getDegree().equalsIgnoreCase("BE") || c.getDegree().equalsIgnoreCase("MCA")
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|| c.getDegree().equalsIgnoreCase("BSC")));
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cdArray.stream().filter(pd).forEach(System.out::println);
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}
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void StudentCountBEtest() {
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System.out.println("-----------------------------------------------------------------------------------------------------");
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System.out.println("StudentCountBEtest");
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Predicate<CourseData> pd = (c -> (c.getDegree().equalsIgnoreCase("BE")));
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long count = cdArray.stream().filter(pd).count();
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System.out.println("Count of BE Students is :" + count);
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}
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void StudentCountPlaced() {
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System.out.println("-----------------------------------------------------------------------------------------------------");
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System.out.println("StudentCountPlaced");
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Predicate<CourseData> pd = (c -> (c.getPlaced().equalsIgnoreCase("Y")));
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long count = cdArray.stream().filter(pd).count();
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System.out.println("Count of Number of Students Placed is :" + count);
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}
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void StudentCountCompletedButNotPlaced() {
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System.out.println("-----------------------------------------------------------------------------------------------------");
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System.out.println("StudentCountCompletedButNotPlaced");
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Predicate<CourseData> pd = (c -> (c.getCompleted().equalsIgnoreCase("Y") && !c.getPlaced().equalsIgnoreCase("Y")));
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long count = cdArray.stream().filter(pd).count();
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System.out.println("Count of Number of Students Who Completed Course But Not Placed is :" + count);
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}
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void StudentCountNotPlacedAndPlaced() {
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System.out.println("-----------------------------------------------------------------------------------------------------");
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System.out.println("StudentCountNotPlacedAndPlaced");
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Predicate<CourseData> pd = (c -> (c.getPlaced().equalsIgnoreCase("Y")));
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Predicate<CourseData> pd1 = (c -> (!c.getPlaced().equalsIgnoreCase("Y")));
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long count = cdArray.stream().filter(pd).count();
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System.out.println("Count of Number of Students Placed is :" + count);
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long count1 = cdArray.stream().filter(pd1).count();
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System.out.println("Count of Number of Students NOT Placed is :" + count1);
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}
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void StudentByName() {
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System.out.println("-----------------------------------------------------------------------------------------------------");
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System.out.println("StudentSearchByName" + "CLARK");
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Predicate<CourseData> pd = (c -> (c.getName().contains("CLARK") ));
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cdArray.stream().filter(pd).forEach(System.out::println);
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long count = cdArray.stream().filter(pd).count();
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System.out.println("Count of Number of Students Who Completed Course But Not Placed is :" + count);
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}
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void StudentNames() {
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System.out.println("-----------------------------------------------------------------------------------------------------");
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System.out.println("StudentNames" );
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for (CourseData ele : cdArray) {
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System.out.println(ele.getName());
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}
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}
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void StudentQualAndCount() {
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System.out.println("-----------------------------------------------------------------------------------------------------");
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System.out.println("StudentQualAndCount" );
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Map<String, Long> qualCount = new HashMap<String, Long>();
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qualCount = cdArray.stream().collect(Collectors.groupingBy(CourseData::getDegree, Collectors.counting()));
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System.out.println(qualCount);
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}
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void StudentQualAndScoreInRange() {
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System.out.println("-----------------------------------------------------------------------------------------------------");
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System.out.println("StudentQualAndScoreInRange" );
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int lower_range = 80;
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int higher_range = 90;
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Predicate<CourseData> pd = (c -> (c.getDegree().equalsIgnoreCase("BE") && c.getScore() >= lower_range && c.getScore() <= higher_range ));
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long count = cdArray.stream().filter(pd).count();
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System.out.println("Count of BE Students Who Scored Between 80 and 90 Percent Is :" + count + " out of " + cdArray.stream().count());
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}
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}

‎junit5/src/main/java/com/lwl/junit/JSONManager.java‎

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package com.lwl.junit;
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import java.io.File;
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import java.io.FileNotFoundException;
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import java.io.IOException;
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import com.fasterxml.jackson.core.JsonParseException;
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import com.fasterxml.jackson.databind.JsonMappingException;
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import com.fasterxml.jackson.databind.ObjectMapper;
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public class JSONManager {
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private ObjectMapper om;
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{
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this.om = new ObjectMapper();
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}
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public <T> T LoadGenericJson(Class<T> obj, String filename) throws FileNotFoundException {
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File fs = new File(filename);
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try {
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return om.readValue(fs, obj);
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// JavaType type = om.getTypeFactory().constructParametricType(obj.class, obj);
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// return om.readValue(fs, new TypeReference<T>() {});
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} catch (JsonParseException e1) {
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e1.printStackTrace();
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} catch (JsonMappingException e1) {
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e1.printStackTrace();
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} catch (IOException e1) {
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e1.printStackTrace();
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}
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return null;
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}
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}

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