挑错题（ABCD注释标注的哪行代码有错误？）public class Example1 /A{ public static void main(String args[]) /B { System.out.println("ok"); /C System.out.println("hello"); system.out.println("您好"); /D }}

下列程序片断的执行,说法正确的是 public class Test ( public static void main (String[] args){ by

分行写出以下程序的运行结果：public class X3_3_1 (public static void main(String[] args){for(in

[单选题]阅读下面代码 public class { public static void main(String[] args) { double d=12.3； Decrementer dec=new Decrementer()； dec.decrement(d)； System.out.println(d)； } } class Decrementer { public void decrement(double decMe) { decMe=decMe-1.0; } } 代码执行后输出的结果是A．

[单选题]阅读下列代码 public class { public static void main(String args[]){ double d=12.3; Decrementer dec=new Decrementer(); dec. decrement(D) ; System. out. println(D) ; } } class Decrementer{ public void decrement(double decMe){ decMe=decMe-1.0; } } 代码执行后输出结果是A

[单选题]阅读下列代码 public class { public static void main(String args[]){ double d=12.3; Decrementer dec=new Decrementer(); dec. decrement(D) ; System. out. println(D) ; } } class Decrementer{ public void decrement(double decMe){ decMe=decMe-1.0; } } 代码执行后输出结果是A

[单选题]程序：class TestApp{public static void main (String[] args){int x=6;if (x>l)System. out. println("x>l");else if (x>5)System. out .println("x>5");else if (x<10)System. out. println("x

[单选题]现有：class TestApp{public static void main (String[] args){for (int i=0; i

[主观题]分析以下代码。public static void test(string ConnectString){System.Data.OleDb.OleDbConnection conn = new System.Data.OleDb.OleDbConnection();conn.ConnectionString = ConnectString;try{conn.Open();…….}catch(Exception Ex){MessageBox.Show(Ex.ToString());}finall

[主观题]分析以下代码。public static void test(string ConnectString){System.Data.OleDb.OleDbConnection conn = new System.Data.OleDb.OleDbConnection();conn.ConnectionString = ConnectString;try{conn.Open();…….}catch(Exception Ex){MessageBox.Show(Ex.ToString());}finall

[单选题]程序：classTestApp{public static void main (String[] args){int X=5：switch (x){case l:case 2:case 3:System. out．println（“一季度”）;break;case 4:case 5:case 6:System. out．println（“二季度”）;break;default:System. out.println（“三季度以上&rd