单项选择题
class DemoApp{ public static void main(String[] args){ int x = 5; int y = ++x + x++; S ystem.out.println(“y=”+y+”,x=”+x); } } 以上程序运行后的输出结果是哪项?()
A.y=10,x=5 B.y=11,x=6 C.y=12,x=7 D.y=11,x=7
class Parser extends Utils { public static void main (...
class Parser extends Utils { public static void main (String [] args) { try { System.out.print(new Parser().getInt("42")); } catch (NumberFormatException n) { System.out.println("NFExc "); } } int getInt(String arg) throws NumberFormatException { return Integer.parseInt(arg); } } class Utils { int getInt(String arg) { return 42; } } 结果为:()
A.42 B.NFExc C.42NFExc D.编译失败
class Parser extends Utils { public static void main(S...
class Parser extends Utils { public static void main(String [] args) { System.out.print(new Parser().getInt("42")); } int getInt(String arg) { return Integer.parseInt(arg); } } class Utils { int getInt(String arg) throws Exception { return 42; } } 结果为:()
A.42 B.编译失败 C.无输出结果 D.运行时异常被抛出
class Top { static int x = 1; public Top(int y) { x *...
class Top { static int x = 1; public Top(int y) { x *= 3; } } class Middle extends Top { public Middle() { x += 1; } public static void main(String [] args) { Middle m = new Middle(); System.out.println(x); } } 结果为:()
A.1 B.2 C.3 D.编译失败