多项选择题
A.native public void setTemperature(int kelvin);
B.private native void setTemperature(int kelvin);
C.protected int native getTemperature();
D.public abstract native void setTemperature(int kelvin);
E.native int setTemperature(int kelvin) {}
单项选择题 What will be written to the standard output when the following program is run?() class Base { int i; Base() { add(1); } void add(int v) { i += v; } void print() { System.out.println(i); } } class Extension extends Base { Extension() { add(2); } void add(int v) { i += v*2; } } public class Qd073 { public static void main(String args[]) { bogo(new Extension()); } static void bogo(Base b) { b.add(8); b.print(); } }
单项选择题 WhatdoesthevaluereturnedbythemethodgetID()foundinclassjava.awt.AWTEventuniquelyidentify?()
单项选择题 Whencreatingaclassthatassociatesasetofkeyswithasetofvalues,whichoftheseinterfacesismostapplicable?()