public class HelloWorld {
public static void main(String args[]) {
int arc = args.length;
System.out.println("Hello World! This is my first java program!") ;
if (arc>0){ for (int i =0;i<arc;i++) System.out.println(args[i]);}
else{
System.out.println("The application have no args!");}
}
}
public static void main(String args[]) {
int arc = args.length;
System.out.println("Hello World! This is my first java program!") ;
if (arc>0){ for (int i =0;i<arc;i++) System.out.println(args[i]);}
else{
System.out.println("The application have no args!");}
}
}
F:\>java mmdd 23 56
args【】 是从23 开始的吧。
对,args[0] 就是23
args它是个字符串数组
length是属性,不是方法。