多项选择题
A.The value of an int is undetermined.
B.The value of all numeric types is zero.
C.The compiler may issue an error if the variable is used before it is initialized.
D.The value of a String variable is "" (empty string).
E.The value of all object variables is null.
多项选择题 Which statements concerning the relationships between the following classes are true?() class Foo { int num; Baz comp = new Baz(); } class Bar { boolean flag; } class Baz extends Foo { Bar thing = new Bar(); double limit; }
多项选择题 Giventwocollectionobjectsreferencedbycol1andcol2,whichofthesestatementsaretrue?()
多项选择题 Which statements concerning the following code are true?() class a { public a() {} public a(int i) { this(); } } class b extends a { public boolean b(String msg) { return false; } } class c extends b { private c() { super(); } public c(String msg) { this(); } public c(int i) {} }