如何简单调试运行JAVA编程思想第三版书中的示例

以下均为菜鸟俺所言：
  Think In Java书中，作者编写的一些示例可以帮助我们很好的去理解文中大意，调试好程序后再Debug运行看程序的运行流程会让我思路清晰，书中所言也明朗了许多。
  作者在书中的示例都会引用他自己编写的应用类库com.bruceeckel.simpletest.*,我是JDK 6环境，貌似此类库是在JDK1.4环境下编写的，所以老是编译报错，我也没能耐去更改。就采取折中的方法，不引用作者自定义的类库，去除导入类库的声明和几句相关语句，举例第四章This关键字的源代码 如下：

//这是原源代码
import com.bruceeckel.simpletest.*;

public class Flower {
	static Test monitor = new Test();

	int petalCount = 0;

	String s = new String("null");

	Flower(int petals) {
		petalCount = petals;
		System.out.println("Constructor w/ int arg only, petalCount= "
				+ petalCount);
	}

	Flower(String ss) {
		System.out.println("Constructor w/ String arg only, s=" + ss);
		s = ss;
	}

	Flower(String s, int petals) {
		this(petals);
		// ! this(s); // Can't call two!
		this.s = s; // Another use of "this"
		System.out.println("String & int args");
	}

	Flower() {
		this("hi", 47);
		System.out.println("default constructor (no args)");
	}

	void print() {
		// ! this(11); // Not inside non-constructor!
		System.out.println("petalCount = " + petalCount + " s = " + s);
	}

	public static void main(String[] args) {
		Flower x = new Flower();
		x.print();
		monitor.expect(new String[] {
				"Constructor w/ int arg only, petalCount= 47",
				"String & int args", "default constructor (no args)",
				"petalCount = 47 s = hi" });
	}
}

//这是修改后的代码
public class Flower {
	int petalCount = 0;

	String s = new String("null");

	Flower(int petals) {
		petalCount = petals;
		System.out.println("Constructor w/ int arg only, petalCount= "
				+ petalCount);
	}

	Flower(String ss) {
		System.out.println("Constructor w/ String arg only, s=" + ss);
		s = ss;
	}

	Flower(String s, int petals) {
		this(petals);
		// ! this(s); // Can't call two!
		this.s = s; // Another use of "this"
		System.out.println("String & int args");
	}

	Flower() {
		this("hi", 47);
		System.out.println("default constructor (no args)");
	}

	void print() {
		// ! this(11); // Not inside non-constructor!
		System.out.println("petalCount = " + petalCount + " s = " + s);
	}

	public static void main(String[] args) {
		Flower x = new Flower();
		x.print();		
	}
}

在此也希望能有前辈指点我如何能顺利调试作者编写的源代码！谢谢。