[java/ast-dom] inserire campo in blocco metodo

[XvOg1]

Salve,
questo è un esempio per l'utilizzo delle suddette api:

AST ast = new AST();
		CompilationUnit unit = ast.newCompilationUnit();
		PackageDeclaration packageDeclaration = ast.newPackageDeclaration();
		packageDeclaration.setName(ast.newSimpleName("example"));
		unit.setPackage(packageDeclaration);
		ImportDeclaration importDeclaration = ast.newImportDeclaration();
		QualifiedName name = 
			ast.newQualifiedName(
				ast.newSimpleName("java"),
				ast.newSimpleName("util"));
		importDeclaration.setName(name);
		importDeclaration.setOnDemand(true);
		unit.imports().add(importDeclaration);
		TypeDeclaration type = ast.newTypeDeclaration();
		type.setInterface(false);
		type.setModifiers(Modifier.PUBLIC);
		type.setName(ast.newSimpleName("HelloWorld"));
		MethodDeclaration methodDeclaration = ast.newMethodDeclaration();
		methodDeclaration.setConstructor(false);
		methodDeclaration.setModifiers(Modifier.PUBLIC | Modifier.STATIC);
		methodDeclaration.setName(ast.newSimpleName("main"));
		methodDeclaration.setReturnType(ast.newPrimitiveType(PrimitiveType.VOID));
		SingleVariableDeclaration variableDeclaration = ast.newSingleVariableDeclaration();
		variableDeclaration.setModifiers(Modifier.NONE);
		variableDeclaration.setType(ast.newArrayType(ast.newSimpleType(ast.newSimpleName("String"))));
		variableDeclaration.setName(ast.newSimpleName("args"));
		methodDeclaration.parameters().add(variableDeclaration);
		org.eclipse.jdt.core.dom.Block block = ast.newBlock();
		MethodInvocation methodInvocation = ast.newMethodInvocation();
		name = 
			ast.newQualifiedName(
				ast.newSimpleName("System"),
				ast.newSimpleName("out"));
		methodInvocation.setExpression(name);
		methodInvocation.setName(ast.newSimpleName("println")); 
		InfixExpression infixExpression = ast.newInfixExpression();
		infixExpression.setOperator(InfixExpression.Operator.PLUS);
		StringLiteral literal = ast.newStringLiteral();
		literal.setLiteralValue("Hello");
		infixExpression.setLeftOperand(literal);
		literal = ast.newStringLiteral();
		literal.setLiteralValue(" world");
		infixExpression.setRightOperand(literal);
		methodInvocation.arguments().add(infixExpression);
		ExpressionStatement expressionStatement = ast.newExpressionStatement(methodInvocation);
		block.statements().add(expressionStatement);
		methodDeclaration.setBody(block);
		type.bodyDeclarations().add(methodDeclaration);
		unit.types().add(type);

Riferimento api:
http://help.eclipse.org/help32/topic..._api_manip.htm

ora, se io volessi inserire un campo con una visbilità, nome e valore, come dovrei fare per averlo in output?

esempio che vorrei:

package example;
	import java.util.*;
	public class HelloWorld {
		public static void main(String[] args) {
                        public int campo = 2;
			System.out.println("Hello" + " world");
		}
	}

ho provato ad usare SingleVariableDeclaration per dargli un nome e un tipo, cosi:
SingleVariableDeclaration var = ast.newSingleVariableDeclaration();
var.setType(ast.newPrimitiveType(PrimitiveType.INT ));
var.setName(ast.newSimpleName("campo1"));

ma poi non sò come andare avanti e associare questo campo al blocco del metodo main

qualcuno mi illumina?

grazie