【单选题】以下代码的输出是什么? public class Test { public static void main(String[] args) { String s1 = "Welcome to Java!"; String s2 = s1; if (s1 == s2) System.out.println("s1 and s2 reference to the same String object...
【单选题】以下代码的输出是什么? public class Test { public static void main(String[] args) { String s1 = new String("Welcome to Java!"); String s2 = new String("Welcome to Java!"); if (s1 == s2) System.out.println("s1 an...
【单选题】下列程序的执行结果为( )。 Private Sub Command1_Click() Dim s1 As String,s2 As String s1='abcdef' Call Invert(s1,s2) Print s2 End Sub Private Sub Invert(ByVal xstr As String,ystr As String) Dim tempstr As String ...