listofnumbers.java

来自「本博客系统是在J2EE平台上用Hibernate框架技术和MVC模式构建」· Java 代码 · 共 35 行

import java.io.*;
import java.util.Vector;
class ListOfNumbers {
 	private Vector victor;
 	final int size=10;
 	public ListOfNumbers() {
 	int i; 
	victor=new Vector(size);
 	for (i=0; i<size; i++) victor.addElement(new Integer(i));
    } //构造方法, 创建向量victor, 包含10个整数0-9 
public void writeList() {
 PrintStream pStr = null;
 try { 
   int i;
   System.err.println("Entering try statement");
   pStr=new PrintStream(new BufferedOutputStream( new FileOutputStream("OutFile.txt")));
   for (i=0; i<size; i++) pStr.println("Value at:"+i+"="+victor.elementAt(i));
 } catch (ArrayIndexOutOfBoundsException e) {
       System.err.println("Caught ArrayIndexOutOfBoundsException:"+e.getMessage());
     } catch (IOException e) {
          System.err.println("Caught IOException:"+ e.getMessage());
        }
 finally {
   if (pStr!=null)    {
      System.err.println("Closing PrintStream"); pStr.close();
     } else { System.err.println("PrintStream not open");
          }
   } //结束异常处理 
} //结束writeList()方法 
  public static void main(String  args[]) {
  ListOfNumbers lofn = new ListOfNumbers(); lofn.writeList();
  }
}