//use Number Format 格式化数据 import java.text.*; import java.util.*; 
public class IntegerSample {  public static void  main(String args[]) {   int amount = 54321;   NumberFormat myformat = NumberFormat.getInstance();//system format   System.out.println(myformat.format(amount));   NumberFormat usformat = NumberFormat.getIntegerInstance(Locale.US);//use format   System.out.println(usformat.format(amount));   NumberFormat germanformat = NumberFormat.getInstance(Locale.CHINA);//china  format   System.out.println(germanformat.format(amount));   NumberFormat jaformat = NumberFormat.getInstance(Locale.JAPAN);//japan format   System.out.println(jaformat.format(amount));  } 
} 
  
//---------------------------------// 
运行结果: 
F:\2004-04-12>java IntegerSample 54,321 54,321 54,321 54,321 
   
 
  |