先大概说明一下情况，我的程序写的这么麻烦的原因是为了在本地测试方便，我加入了日志和动态代理（不过下面的代码中没有动态代理，），这样虽然看上去代码很多，实际上由于有了框架，每次做新题目其实不费事。现在的问题是这个代码在web上可以编译成功但是总是运行错误，实际上直接看main函数可以看到我的main函数其实就是faq上题目1000的标准答案（原本我的代码不是这样的，为了定位错误我不断的简化我的main，直到现在这个样子，），但是为什么还是不行呢，郁闷中。。。
btw当然我其实可以在本地通过后修改代码让它在web上也通过了，不过这样很麻烦，最好有朋友给我解释解释我的问题。感谢。
Source

Problem Id:1000  User Id:pwh06 
Memory:4K  Time:140MS
Language:Java  Result:Runtime Error

Source 

import java.io.*;
import java.util.*;
import java.io.DataInputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.lang.reflect.InvocationHandler;
import java.lang.reflect.Method;
import java.lang.reflect.Proxy;
import java.util.logging.Level;
import java.util.logging.Logger;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class Main {
	private boolean isDebug = false;

	private int a;

	private int b;

	private float step;

	/* (non-Javadoc)
	 * @see POJMonthly20070428.IAaddB1000a#completConsoleInput()
	 */
	public void completConsoleInput() throws IOException {
		initPointsVersionB();
		if (isDebug()) {
			// initCalculateStep();
		}
	}

	/* (non-Javadoc)
	 * @see POJMonthly20070428.IAaddB1000a#initPointsVersionB()
	 */
	public void initPointsVersionB() {
		logger
				.info("please input 2 integers, the format must be like \"36 89\":");

		BufferedReader bufin = new BufferedReader(new InputStreamReader(
				System.in));
		try {
			String in = bufin.readLine();
			Pattern p = Pattern.compile("\\d+");
			Matcher m = p.matcher(in);
			if (m.find())
				setA( Integer.parseInt(m.group()) );
			if (m.find())
				setB( Integer.parseInt(m.group()) );
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		logger.info("you input 2 integer");
		logger.info("first integer is" + a);
		logger.info("second integer is" + b);
	}

	/* (non-Javadoc)
	 * @see POJMonthly20070428.IAaddB1000a#initCalculateStep()
	 */
	public void initCalculateStep() {
		logger
				.info("please input the calculating step as a float number like 0.01");
		BufferedReader bufin = new BufferedReader(new InputStreamReader(
				System.in));
		try {
			String in = bufin.readLine();
			setStep( Float.parseFloat(in) );

		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		logger.info("you input the step is :" + step);
	}

	/**
	 * @param args
	 * @throws IOException
	 */
	public static void main(String[] args) throws IOException {
		Main proxy = new Main();
BufferedReader stdin = 
            new BufferedReader(
                new InputStreamReader(System.in));

        String line = stdin.readLine();
        StringTokenizer st = new StringTokenizer(line);
        int a = Integer.parseInt(st.nextToken());
        int b = Integer.parseInt(st.nextToken());
        System.out.println(a + b);

	}

	/* (non-Javadoc)
	 * @see POJMonthly20070428.IAaddB1000#getA()
	 */
	/* (non-Javadoc)
	 * @see POJMonthly20070428.IAaddB1000a#getA()
	 */
	public int getA() {
		return a;
	}

	/* (non-Javadoc)
	 * @see POJMonthly20070428.IAaddB1000#setA(int)
	 */
	/* (non-Javadoc)
	 * @see POJMonthly20070428.IAaddB1000a#setA(int)
	 */
	public void setA(int a) {
		this.a = a;
	}

	/* (non-Javadoc)
	 * @see POJMonthly20070428.IAaddB1000#getB()
	 */
	/* (non-Javadoc)
	 * @see POJMonthly20070428.IAaddB1000a#getB()
	 */
	public int getB() {
		return b;
	}

	/* (non-Javadoc)
	 * @see POJMonthly20070428.IAaddB1000#setB(int)
	 */
	/* (non-Javadoc)
	 * @see POJMonthly20070428.IAaddB1000a#setB(int)
	 */
	public void setB(int b) {
		this.b = b;
	}

	/* (non-Javadoc)
	 * @see POJMonthly20070428.IAaddB1000#isDebug()
	 */
	/* (non-Javadoc)
	 * @see POJMonthly20070428.IAaddB1000a#isDebug()
	 */
	public boolean isDebug() {
		return isDebug;
	}

	/* (non-Javadoc)
	 * @see POJMonthly20070428.IAaddB1000#setDebug(boolean)
	 */
	/* (non-Javadoc)
	 * @see POJMonthly20070428.IAaddB1000a#setDebug(boolean)
	 */
	public void setDebug(boolean isDebug) {
		this.isDebug = isDebug;
	}

	/* (non-Javadoc)
	 * @see POJMonthly20070428.IAaddB1000#getStep()
	 */
	/* (non-Javadoc)
	 * @see POJMonthly20070428.IAaddB1000a#getStep()
	 */
	public float getStep() {
		return step;
	}

	/* (non-Javadoc)
	 * @see POJMonthly20070428.IAaddB1000#setStep(float)
	 */
	/* (non-Javadoc)
	 * @see POJMonthly20070428.IAaddB1000a#setStep(float)
	 */
	public void setStep(float step) {
		this.step = step;
	}

	 Logger logger = Logger.getLogger("InfoLogging");

	public Logger getLogger() {
		return logger;
	}

	public void setLogger(Logger logger) {
		this.logger = logger;
	}

}