Replicate Eclipse XML Editor using Java Swing

i want to replicate the functionality of eclipse XML editor using Java. For the below code, I want to display the output exactly the same when we load the XML file in eclipse like 2 tabs "source" and "design". In design tab, I can see the tree structure of XML as well as I can edit the structure. In source tab, I can edit the source code and the plus-minus option must be present. If I click on plus then the XML tag should expand and if I click on minus then the XML tag should contract. I tried the tree structure using JTree, however, I am unable to edit the tree just like we can edit in eclipse. I want to edit the XML File dynamically and save it. Please help me to achieve this functionality.

<?xml version="1.0" encoding="WINDOWS-1252" ?>    
<dataTemplate name="Employee Listing" description="List of Employees" v
 ersion="1.0">
 <parameters>- Defines a single parameter for the Department Number 
        - with default of 20:
     <parameter name="p_DEPTNO" dataType="character" 
defaultValue="20"/>
</parameters>
<dataQuery>
<sqlStatement name="Q1">
  <![CDATA[SELECT DEPTNO,DNAME,LOC from dept 
          order by deptno]]>
</sqlStatement>
<xml name="empxml" expressionPath=".//ROW[DEPTNO=$DEPTNO]"> - Defines name
 -  and link to DEPTNO in Q1
<url method="GET" realm="" username="" password="">
 file:///d:/dttest/employee.xml</url> - Defines url for xml data
</xml>  
</dataQuery>-
 <dataStructure>- The following section specifies the XML hierarchy 
            - for the returning data: 
 <group name="G_DEPT" source="Q1" 
  <element name="DEPT_NUMBER" value="DEPTNO"  />
 <element name="DEPT_NAME"   value="DNAME"/>
 - This creates a summary total at the department level based 
 - on the salaries at the employee level for each department:                 
  <element name="DEPTSAL" value="G_EMP.SALARY" 
   function="SUM()"/>
           <element name="LOCATION" value="LOC"  />
   <group name="G_EMP" source="empxml">
      <element name="EMPLOYEE_NUMBER" value="EMPNO" />
      <element name="NAME" value="ENAME"/>
      <element name="JOB" value="JOB" />
      <element name="MANAGER" value="MGR"/>
      <element name= "HIREDATE" value="HIREDATE"/>
      <element name="SALARY" value="SAL"/>
    </group>      
  </group>        
 </dataStructure>
</dataTemplate>