Code Utilization and Minimization in real-time Scenario

Here workMethodOld code is burden to check each and every report name to get the forwardNumber. For that reason we rewrite the same method using map like workMethod method.

/*
* @(#)ReportMappingCode.java 1.0
*
* Description:
*
* Created by MyJavaCafe team.
*
* Modification History:
* Date Version Developer Description
* ---------- ------ --------------- -----------------
* 04-02-2014 1.0 MyJavaCafe Initial version
*
*/
package com.pro;

import java.util.HashMap;
import java.util.Map;

/**
* This class use for getting the mapping report number based on the map name
*/
public class ReportMappingCode {

/**
* Assign mapping number for each map name
*/
public static final Map REPORT_TYPE = new HashMap() {
{
put(Constants.oneRpt, "1");
put(Constants.twoRpt, "2");
put(Constants.threeRpt, "3");
put(Constants.fourRpt, "4");
}
};

/**
* Retrieving the mapping report number based on the map name using Map
*/
private static String workMethod(String reportName) {
System.out.println("ReportMappingCode..workMethod()...Start");
String forwardMapping = null;
if (reportName != null) {
if (REPORT_TYPE.containsKey(reportName)) {
forwardMapping = (String) REPORT_TYPE.get(reportName);
System.out.println("Given Mapping Name "+reportName+", Forward Maping number: "+forwardMapping);

}else{
System.err.println("Given Mapping Name not available. Please retry.");
}
}else{
System.err.println("Given Mapping Name Null. Please retry.");
}
System.out.println("ReportMappingCode..workMethod()...End");
return forwardMapping;
}

/**
* Retrieving the mapping report number based on the map name using IF/ElSE
*/
private static String workMethoOld(String reportName) {
System.out.println("ReportMappingCode..workMethodOld()...Start");
String forwardMapping = null;
if (reportName != null) {
if (reportName.equals(Constants.oneRpt)) {
forwardMapping = "1";
System.out.println("Given Mapping Name "+reportName+", Forward Maping number: "+forwardMapping);
}
else if (reportName.equals(Constants.twoRpt)) {
forwardMapping = "2";
System.out.println("Given Mapping Name "+reportName+", Forward Maping number: "+forwardMapping);
}
else if (reportName.equals(Constants.threeRpt)) {
forwardMapping = "3";
System.out.println("Given Mapping Name "+reportName+", Forward Maping number: "+forwardMapping);
}
else if (reportName.equals(Constants.fourRpt)) {
forwardMapping = "4";
System.out.println("Given Mapping Name "+reportName+", Forward Maping number: "+forwardMapping);
}else{
System.err.println("Given Mapping Name not available. Please retry.");
}

}else{
System.err.println("Given Mapping Name Null. Please retry.");
}
System.out.println("ReportMappingCode..workMethodOld()...End");
return forwardMapping;
}

public static void main(String[] args) {
final String mappingName = Constants.oneRpt;//"";//null;
workMethoOld(mappingName);
workMethod(mappingName);

}
}
/**
* This class use for Constants
*/
class Constants{
public final static String oneRpt = "oneRpt";
public final static String twoRpt = "twoRpt";
public final static String threeRpt = "threeRpt";
public final static String fourRpt = "fourRpt";
}


Scenario 1: If you pass the mapping value in main method:
mappingName = Constants.oneRpt;
Output:
ReportMappingCode..workMethodOld()...Start
Given Mapping Name oneRpt, Forward Maping number: 1
ReportMappingCode..workMethodOld()...End
ReportMappingCode..workMethod()...Start
Given Mapping Name oneRpt, Forward Maping number: 1
ReportMappingCode..workMethod()...End


Scenario 2:
If you pass the mapping value in main method:
mappingName = “”;
Output:
ReportMappingCode..workMethodOld()...Start
Given Mapping Name not available. Please retry.
ReportMappingCode..workMethodOld()...End
ReportMappingCode..workMethod()...Start
Given Mapping Name not available. Please retry.
ReportMappingCode..workMethod()...End


Scenario 3:
If you pass the mapping value in main method:
mappingName = null;
Output:
ReportMappingCode..workMethodOld()...Start
Given Mapping Name Null. Please retry.
ReportMappingCode..workMethodOld()...End
ReportMappingCode..workMethod()...Start
Given Mapping Name Null. Please retry.
ReportMappingCode..workMethod()...End