【多选题】public class Parent { int change() {...} } class Child extends Parent { } 哪些方法可被加入类Child?
A.
. public int change(){}
C.
private int change(){}
D.
abstract int chang(){}
【判断题】无烟煤这种煤炭气化时黏结,并且产生焦油,煤气中的不饱和烃、碳氢化合物较多,煤气净化系统较复杂,煤气的热值较高。
【单选题】下面程序的运行结果为哪个? class Parent { void printMe( ) { System.out.println("parent"); } } class Child extends Parent { void printMe( ) { System.out.println("child"); } } public class Test { public static...
【多选题】public class Parent { int change() {…} } class Child extends Parent { } Which methods can be added into class Child?()
C.
private int change(){}
D.
abstract int chang(){}
【单选题】下面程序的运行结果为哪个? class Parent { void printMe( ) { System.out.println("parent"); } } class Child extends Parent { void printAll( ) { System.out.println("parent " + "child"); } } public class Test {...
【判断题】class Parent{ private String name; public Parent(){ } } public class Child extends Parent{ private String department; public Child(){ } public String getValue(){ return name; } public static void main...