COBOL to Java conversion

Ispirer MnMTK is the application migration tool, which supports COBOL to Java conversion of any level of complexity.

We develop Ispirer MnMTK using our customer-oriented approach so as we do our best in order to satisfy all your project requirements. Our technical experts have great experience in application migrations and always find innovative solutions even to complicated problems.

This demo shows how Ispirer MnMTK can convert COBOL to Java.




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Why Ispirer MnMTK

Ispirer MnMTK automates the entire migration process COBOL to Java conversion. Moreover, choosing Ispirer MnMTK to convert COBOL you eliminate most of associated risks and considerably reduce internal efforts. All these benefits are available at very reasonable and competitive costs, which makes Ispirer MnMTK even more attractive conversion tool for this project type.

Our main benefits:

• High quality and experiences technical support: our technical team has a tremendous experience in migration projects of different levels of complexity.
• Customer-oriented approach and Fast Customization: we personalize our migration tool in such a way that a customized version can fully satisfy our client’s business needs, custom conversions and optimizations are made within 1-2 business days;
• Pre-Sales Engagement: we demonstrate a full conversion during the evaluation before you make a decision.
• Flexible pricing: we can offer you a wide range of options, among which you will definitely find the one which suits you;
• Optimized Conversion: after the conversion you get an intelligent and maintainable code, without using any Ispirer's middleware.

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Assessment Process

The assessment of your migration project could definitely help to weigh up efforts and the approximate cost of your migration. In order to facilitate the process, you're welcome to fill in our:

• Cobol to Java Migration Questionnaire

COBOL Program Structure

 
IDENTIFICATION DIVISION.
PROGRAM-ID. DemoId.
ENVIRONMENT DIVISION.
DATA DIVISION.
PROCEDURE DIVISION.
FIRST-PARAGRAPH.
    DISPLAY "First DEMO".
 

There are the four divisions:

• IDENTIFICATION DIVISION: This is where you must enter the program name.
• ENVIRONMENT DIVISION: This is where you define the files the program needs.
• DATA DIVISION: This is where you declare variables, records, files etc.
• PROCEDURE DIVISION: This is where you write the program. In the sample above this is all in one paragraph. A paragraph is a series of statements named by a label. There is no specific mark to the end of a paragraph.

Conversion features

• Migrates database of COBOL’s application to Oracle/MySQL/PostgreSQL/etc. database


• Converts COBOL's programs to Java classes

 
package CobolApplication;
 
public class DemoId
{
  static void main(String[] args)
  {
    System.out.println("First DEMO");
  }
}
 

• Converts identifiers’ names to “camel” case


• Converts WORKING-STORAGE section with declaration variables to variables of class



COBOL:

 
WORKING-STORAGE SECTION.
01 MY_STRING_1    PIC X(20).
01 MY_STRING_2    PIC X(30).
01 MY_NUMBER    PIC 9(2) VALUE 1.
 

Java:

 
  private String MyString1;
private String MyString2;
private int MyNumber = 1;
 

• Converts COBOL records to user-defined Java types



COBOL:

 
01 MY_DATA_RECORD.
    03 MY_NAME        PIC X(20).
    03 MY_ADDRESS  PIC X(40).
    03 MY_ID               PIC 9(2).
 

Java:

 
public class MyDataRecord
   {
      public String MyName = "John Smit";
      public String MyAddress = "Walt street";
      public int MyId = 123;
   }
  public MyDataRecord myDataRecord = new MyDataRecord();
 

• Converts COBOL MOVE TO/COMPUTE statements to Java assignment statements



COBOL:

 
MOVE 5 TO MY_NUMBER.
 

Java:

 
MyNumber = 5;
 

• Converts COBOL sections (group of paragraphs or statements) to Java methods. The SECTION could be called using PERFORM statement. PERFORM is converted to call of Java method.



COBOL:

 
DISPLAY-INFORMATION.
    DISPLAY DISPLAY 'My Number = ' MY_NUMBER.
 

Java:

 
private void DisplayInformation()
{
    System.out.println("My Number = " + MyNumber);
}
 

• Converts COBOL control structures to Java control statements



COBOL:

 
IF MY_NUMBER > 5
      MOVE 12 TO MY_NUMBER.
 

Java:

 
  if (MyNumber > 5)
  {
      MyNumber = 12;
  }
 

COBOL:

 
PERFORM UNTIL WS-NUMBER-1 > 100 AND WS-NUMBER-1 < 1000
         DISPLAY "Still between 100 and 1000"
END-PERFORM
 

Java:

 
while ((MyNumber > 100) && (MyNumber < 1000))
{
      System.out.println("Still between 100 and 1000");
}
 

• Converts Screen output (DISPLAY statement) to “System.out.println” method


• Converts EXEC SQL/ END-EXEC(select, insert, update, delete, CURSOR statements) statements to Java calls of database SQL procedures generated automatically based on Embedded SQL statements



COBOL:

 
EXEC SQL
           DECLARE GET_EMPLOYEE CURSOR FOR
           SELECT NAME,
                  ADDRESS,
                   PHONE
             FROM EMPLOYEE
             WHERE EMPID    =:MY_ID
             END-EXEC.
 
             EXEC SQL
             OPEN GET_EMPLOYEE
           END-EXEC.
 
     EXEC SQL
          FETCH GET_EMPLOYEE
           INTO :CST-NAME,
                :CST-ADDRESS,
                :CST-PHONE
     END-EXEC
 
  IF CST-NAME > SPACES
              DISPLAY 'NAME = ' CST-NAME
       DISPLAY 'ADDRESS = ' CST-ADDRESS
       DISPLAY 'PHONE = ' CST-PHONE
  ELSE
              DISPLAY 'EMPLOYEE NOT FOUND'
   END-IF.
 
    EXEC SQL CLOSE GET_EMPLOYEE END-EXEC.
 

Java:

 
create or replace
PROCEDURE getEmployee_Cursor_Proc1
(in_my_id IN EMPLOYEE.EMPID%TYPE,
 out_cts_name OUT EMPLOYEE.NAME%TYPE,
 out_cst_address OUT EMPLOYEE.ADDRESS%TYPE,
 out_cst_phone OUT EMPLOYEE.PHONE%TYPE
 )
AS
BEGIN
  SELECT NAME, ADDRESS, PHONE 
  INTO out_cts_name, out_cst_address, out_cst_phone
  FROM EMPLOYEE
  WHERE EMPID = in_my_id;   
END;
 
   try{
            Connection con = DBConnection.getConnection();
CallableStatement stmt = con.prepareCall
("{call getEmployee_Cursor_Proc1(?,?,?,?)}");
            stmt.setInt(1, MyId);
 
            stmt.registerOutParameter(2, java.sql.Types.VARCHAR);
            stmt.registerOutParameter(3, java.sql.Types.VARCHAR);
            stmt.registerOutParameter(4, java.sql.Types.VARCHAR);
 
            stmt.execute();
 
            String CstName = stmt.getString(2);
            String CstAddress = stmt.getString(3);
            String CstPhone = stmt.getString(4);
 
            if(CstName!=null){
System.out.println("NAME="+CstName+",
ADDRESS="+CstAddress+",PHONE="+CstPhone);
            }else{
                System.out.println("EMPLOYEE NOT FOUND");
            }
        }catch(Exception e){
            e.printStackTrace();
        }finally{
            try {
                stmt.close();
                con.close();
                input.close();
            } catch (SQLException e) {
                e.printStackTrace();
            }
        }
 

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