Ikk：新頁面: Given: 10. package com.sun.scjp; 11. public class Geodetics { 12. public static final double DIAMETER = 12756.32; //kilometers 13. } Which two correctly access the DIAMETER ...

2013-03-30T05:42:47Z

新頁面: Given: 10. package com.sun.scjp; 11. public class Geodetics { 12. public static final double DIAMETER = 12756.32; //kilometers 13. } Which two correctly access the DIAMETER ...

新頁面

Given:
10. package com.sun.scjp;
11. public class Geodetics {
12. public static final double DIAMETER = 12756.32; //kilometers
13. }

Which two correctly access the DIAMETER member of the Geodetics class? (Choose two.)
A. import com.sun.scjp.Geodetics;
public class TerraCarta{
public double halfway()
{return Geodetics.DIAMETER/2.0;}
B. import static com.sun.scjp.Geodetics;
public class TerraCarta{
public double halfway(){return DIAMETER/2.0;}}
C. import static com.sun.scjp.Geodetics.*;
public class TerraCarta{
public double halfway(){return DIAMETER/2.0;}}
D. package com.sun.scjp;
public class TerraCarta{
public double halfway(){return DIAMETER/2.0;}}

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<span style="font-size:medium;">解答</span>

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<span style="font-size: medium;">Ans: A C </span>

<span style="font-size:medium;"> 解說:
DIAMETER是類別成員，使用時應該是用：類別名.類別成員名字，如A
import static可以簡化使用類別成員時的”類別名.”，可以直接叫用類別成員，如C

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{{SCJP 1.6版考題講解}}

SCJP 1.6版考題 101 - 修訂歷史

Ikk：新頁面: Given: 10. package com.sun.scjp; 11. public class Geodetics { 12. public static final double DIAMETER = 12756.32; //kilometers 13. } Which two correctly access the DIAMETER ...