下列程序的输出结果是什么( ) public class E { public static void main (String args[ ]) { char c = '\0'; for(int i=1;i<=4;i++) { switch(i) { case 1: c = 'J'; System.out.print(c); case 2: c = 'e'; System.out.print(c); break; case 3: c = 'p'; System.out.print(c); default: System.out.print("好"); } } } } 2. 下列程序的输出结果是( ) public class E { public static void main (String []args) { int x = 1,y = 6; while (y-->0) { x--; } System.out.print("x="+x+",y="+y); } }