public class StringComper {
public static void main(String args[]) {
String a = "2008-02-29 18:10:00";
String b = null;
if(a.compareTo(b)>=1 || b==null || b.equals("") ){
System.out.println("a>b :");
}
}如果a〉=b 或者b为null或者b=“”;执行 System.out.println("a>b :");
而b = null 怎么修改
public static void main(String args[]) {
String a = "2008-02-29 18:10:00";
String b = null;
if(a.compareTo(b)>=1 || b==null || b.equals("") ){
System.out.println("a>b :");
}
}如果a〉=b 或者b为null或者b=“”;执行 System.out.println("a>b :");
而b = null 怎么修改
if(a.compareTo(b)> =1 ¦ ¦ (b==null && b.equals("")))