Insertar / agregar declaraciones al código fuente de Java mediante Eclipse JDT ASTRewrite

public class Main {
	public static void main(String[] args) {
	}
	public static void add() {
		int i = 1;
		System.out.println(i);
	}
}

public class Main {public static void main (String[] args) {} public static void add () {int i = 1; System.out.println (i); }}

public class Main {
	public static void main(String[] args) {
		add();
	}
	public static void add() {
		int i = 1;
		System.out.println(i);
	}
}

public class Main {public static void main (String[] args) {agregar (); } public static void add () {int i = 1; System.out.println (i); }}

	private void AddStatements() throws MalformedTreeException, BadLocationException, CoreException {
 
		IProject project = ResourcesPlugin.getWorkspace().getRoot().getProject("testAddComments");
		IJavaProject javaProject = JavaCore.create(project);
		IPackageFragment package1 = javaProject.getPackageFragments()[0];
 
		// get first compilation unit
		ICompilationUnit unit = package1.getCompilationUnits()[0];
 
		// parse compilation unit
		CompilationUnit astRoot = parse(unit);
 
		// create a ASTRewrite
		AST ast = astRoot.getAST();
		ASTRewrite rewriter = ASTRewrite.create(ast);
 
		// for getting insertion position
		TypeDeclaration typeDecl = (TypeDeclaration) astRoot.types().get(0);
		MethodDeclaration methodDecl = typeDecl.getMethods()[0];
		Block block = methodDecl.getBody();
 
		// create new statements for insertion
		MethodInvocation newInvocation = ast.newMethodInvocation();
		newInvocation.setName(ast.newSimpleName("add"));
		Statement newStatement = ast.newExpressionStatement(newInvocation);
 
		//create ListRewrite
		ListRewrite listRewrite = rewriter.getListRewrite(block, Block.STATEMENTS_PROPERTY);
		listRewrite.insertFirst(newStatement, null);
 
		TextEdit edits = rewriter.rewriteAST();
 
		// apply the text edits to the compilation unit
		Document document = new Document(unit.getSource());
 
		edits.apply(document);
 
		// this is the code for adding statements
		unit.getBuffer().setContents(document.get());
	}

Private void AddStatements () arroja MalformedTreeException, BadLocationException, CoreException {IProject proyecto = ResourcesPlugin.getWorkspace (). getRoot (). getProject («testAddComments»); IJavaProject javaProject = JavaCore.create (proyecto); IPackageFragment paquete1 = javaProject.getPackageFragments ()[0]; // obtener la primera unidad de compilación ICompilationUnit unit = package1.getCompilationUnits ()[0]; // analizar la unidad de compilación CompilationUnit astRoot = parse (unidad); // crea un ASTRewrite AST ast = astRoot.getAST (); ASTRewrite rewriter = ASTRewrite.create (ast); // para obtener la posición de inserción TypeDeclaration typeDecl = (TypeDeclaration) astRoot.types (). get (0); MethodDeclaration methodDecl = typeDecl.getMethods ()[0]; Bloque bloque = methodDecl.getBody (); // crear nuevas declaraciones para la inserción MethodInvocation newInvocation = ast.newMethodInvocation (); newInvocation.setName (ast.newSimpleName («agregar»)); Declaración newStatement = ast.newExpressionStatement (newInvocation); // crear ListRewrite ListRewrite listRewrite = rewriter.getListRewrite (bloque, Bloque.STATEMENTS_PROPERTY); listRewrite.insertFirst (newStatement, null); TextEdit ediciones = rewriter.rewriteAST (); // aplica las ediciones de texto a la unidad de compilación Document document = new Document (unit.getSource ()); edits.apply (documento); // este es el código para agregar declaraciones unit.getBuffer (). setContents (document.get ()); }