assert實作

編譯為一樣javac xxxx.java 只是執行assert時須輸入 java -ea xxxx (沒加入-ea則不會有assert效果)

class assert1{
 public static void main(String[] args){
  int[] data={10,56,66,119,-5,30};
  int sum=0;
  for(int ss:data){
   assert(ss >= 100) : "data more than 100";
   assert(ss <= 0) : "data less than 0";
   sum+=ss;
  }
  System.out.println(" Sum:"+sum);
 }
}