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Welcome to the Java-Parser wiki!
first of all instantiate the parser object

• using input File

File file = new File("BubbleSort.java");
parser p=new  parser(file);   

• using input String

String s = "public class BubbleSort {}";
parser p=new  parser(p);

Methods

• Add Import Statements
  Method: addImportStatment
  
  • Takes as an input the import statements to be added.
    
  • Returns String containing the code after the addition.

String imports = "import java.io.BufferedReader;\r\n" +
                "import java.io.File;\r\n"+
                "import java.io.FileNotFoundException;\r\n" +
                "import java.io.FileReader;\r\n";
p.addImportStatment(imports);

• Get All Classes Declarations
  Method: getClasses
  • Takes no input.
  • Returns ArrayList of all classes declerations as Strings. String x = "package parser2; " + "public class tmp {" + " public static void main(String[] args) {"+ " }" + "}" + "class tmp2{}" ; parser p=new parser(x); System.out.println(p.getClasses());
• Get a Class Body
  Method: getClassBody=
  • Take as an input order(zero-indexed) of the Class.
  • Return the Class's Body as a String.

p.getClassBody(0);

• Refactor/Transform Class Body
  Method: refactorClassBody
  • Take as an input the order(zero-indexed) of the Class and the new body code.
  • Returns String containing the code after the transformation.

p.refactorClassBody(0, "//he new code" + p.getClassBody(0));

• Get All Constructor Declarations
  Method: getClasses
  • Takes no input.
  • Returns ArrayList of all constructors declerations as Strings.

p.getConstructorDecleration();

• Get All Methods Declarations
  Method: getMethodDeclerations
  • Takes no input.
  • Returns Array-list of all Methods declarations as Strings.

p.getMethodDeclerations();

• Get a Method Body
  Method: getMethodBody
  • Take as an input the order(zero-indexed) of the Method.
  • Return the Methods's Body as a String.

p.getMethodBody(0);

• Refactor/Transform Method Body
  Method: refactorMethodBody
  • Take as an input order(zero-indexed) of the Method and the new body code.
  • Returns String containing the code after the transformation.

p.refactorMethodBody(0, "//the new code" + p.getMethodBody(0));

• Get the main Method Body
  Method: getMainMethodBody
  • Take as an input the order(zero-indexed) of the Method.
  • Return the Methods's Body as a String.

p.getMainMethodBody(0);

• Refactor/Transform the main Method Body
  Method: refactorMethodBody
  • Takes as an input the new body code.
  • Returns String containing the code after the transformation.

p.refactorMainMethodBody("//the new code" + p.getMainMethodBody(0));

• Get all Array Assignments (i.e. arr[index] = value;)
  Method: getArrayAssignment
  • Takes no input.
  • Returns ArrayList of all Array assignments as Strings.

p.getArrayAssignment();

• Refactor/Transform an Array Assignment
  Method: refactorArrayAssignment
  • Takes as an input the order(zero-indexed) of the array Assignment instruction and the new code to be add instead of the chosen array assignment.
  • Returns String containing the code after the transformation.

p.refactorArrayAssignment(0,p.getArrayAssignment().get(0)+"//the new code");