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
                    
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                                    单项选择题
                                    
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 - 
                                    单项选择题
                                    
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 - 
                                    单项选择题
                                    
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