题目内容
给定如下代码:3. class Alpha {4. static String s = " ";5. protected Alpha() { s += "alpha "; }6. }7. class SubAlpha extends Alpha {8. private SubAlpha() { s += "sub "; }9. }10. public class SubSubAlpha extends Alpha {11. private SubSubAlpha() { s += "subsub "; }12. public static void main(String[] args) {13. new SubSubAlpha();14. System.out.println(s);15. }16. }运行结果为?()
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运行类C的输出结果为?()class A { public A() { System.out.println( "The default constructor of A is invoked"); }} class B extends A { public B() { System.out.println( "The default constructor of B is invoked"); }} public class C { public static void main(String[] args) { B b = new B(); }}
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Java语言与C++语言相比,最突出的特点()
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