b.java

JAVA SE6 全方位学习 朱仲杰 编著 机械工业出版社出版

import java.io.*;

public class B
{
	public void method() throws IOException, 
								RuntimeException
	{ }
}

class B1 extends B
{
	public void method() throws FileNotFoundException { }
}

class B2 extends B
{
	public void method() throws FileNotFoundException, 
								ArithmeticException,
								java.sql.SQLException
								
	{ }
}

class B3 extends B
{
	public void Method() throws FileNotFoundException,
								ArithmeticException,
								NullPointerException
	{ }
}