public class E_17_while { public static void main(String[] args) { int i = 1; while(i <= 4) { System.out.println("第" + i + "次循环"); i++;//循环4次 //System.out.println("第" + (i++) + "次循环"); } i = 1; while(i <= 1000) { System.out.print("*");//不换行输出 if(i % 10 == 0) System.out.println();//输出空行 i++; } //死循环 while(true) {//不要执行 System.out.println("死循环"); } }