java 中异常处理示例并捕获完整异常内容

public class Test {

    public static void main(String[] args) 
    {
        try 
        {
            int a = 1;
            int b = 0;
            int c = a/b;
        } 
        catch(java.lang.Exception e)
        {
            StringWriter errors = new StringWriter();
            e.printStackTrace(new PrintWriter(errors));
            String errorMsg = errors.toString();
            System.out.println(errorMsg);
        }
    }
}

import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLConnection;
import java.text.DecimalFormat;
import java.util.ArrayList;
import java.util.EventListener;
import java.util.List;

public class Test {
    
    public static void main(String[] args) 
    {
        int a = 1;
        int b = 0;
        int c = 0;
        
        try
        {
            System.out.println("1");
            c = a / b;
            throw new IOException();
        }
        catch(FileNotFoundException e)
        {
            System.out.println("2");
        }
        catch(IOException e)
        {
            System.out.println("3");
        }
        catch(Exception e)
        {
            System.out.println("4");
            c = a / b;
        }
        finally
        {
            System.out.println("5");
        }
        
        System.out.println("6");
    }