JDTによるASTの取得（依存パッケージなし版）

JdtTest.java

package org.eclipse.jdt.core;

import org.eclipse.jdt.internal.compiler.CompilationResult;
import org.eclipse.jdt.internal.compiler.IErrorHandlingPolicy;
import org.eclipse.jdt.internal.compiler.IProblemFactory;
import org.eclipse.jdt.internal.compiler.ast.CompilationUnitDeclaration;
import org.eclipse.jdt.internal.compiler.ast.TypeDeclaration;
import org.eclipse.jdt.internal.compiler.impl.CompilerOptions;
import org.eclipse.jdt.internal.compiler.parser.Parser;
import org.eclipse.jdt.internal.compiler.problem.DefaultProblemFactory;
import org.eclipse.jdt.internal.compiler.problem.ProblemReporter;
import org.eclipse.jdt.internal.compiler.batch.CompilationUnit;

public class JdtTest {

	public static void main(String[] args) {
		IErrorHandlingPolicy policy = new IErrorHandlingPolicy() {
			public boolean proceedOnErrors() {
				return false;
			}
			public boolean stopOnFirstError() {
				return false;
			}
			public boolean ignoreAllErrors() {
				return false;
			}
		};
		CompilerOptions co = new CompilerOptions();
		IProblemFactory pf = new DefaultProblemFactory();
		ProblemReporter pr = new ProblemReporter(policy, co, pf);
		Parser parser = new Parser(pr, false);
		String input = "pathToSource";
		String output = null;
		CompilationUnit unit = new CompilationUnit(null, input, null, output, false);
		CompilationResult result = new CompilationResult(unit, 0, 1, 10);
		CompilationUnitDeclaration parsedUnit = parser.parse(unit, result);
		for(TypeDeclaration td : parsedUnit.types) {
			System.out.println(td.name);
		}
	}
}