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Java数字转字符串前面自动补0的实现


本文原址:http://blogger.org.cn/blog/more.asp?name=hongrui&id=46926
/**  
 * Java里数字转字符串前面自动补0的实现。  
 *    
 */   
public class TestStringFormat {    
  public static void main(String[] args) {    
    int youNumber = 19;    
    // 0 代表前面补充0    
    // 4 代表长度为4    
    // d 代表参数为正数型    
    String str = String.format("%02d", youNumber);    
    System.out.println(str); // 01    
  }    
}   


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