大家分析分析,为什么会出现这种情况:
一个Airport类,包括机场名和对应的航班.
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public class Airport
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{
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private String mAirportName;
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private String[] mAirlines=new String[10];
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private void Init()
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{
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for(int i=0;i<10;i++)
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{
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mAirlines[i]="";
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}
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}
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public Airport(String airport,String[] airlines)
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{
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Init();
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mAirportName=airport;
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mAirlines=airlines;
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}
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public void serAirport(String value)
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{
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mAirportName=value;
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}
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public String getAirport()
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{
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return mAirportName;
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}
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public void setAirlines(String[] airlines)
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{
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mAirlines=airlines;
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}
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public String[] getAirlines()
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{
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return mAirlines;
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}
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}
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调用此类的代码为:
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private static void loadAirportsAndAirlines()
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{
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String strAirport="LGA";
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Airport[] mAirport=new Airport[2];
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String[] strAirlines=new String[10];
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for(int i=0;i<10;i++)
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strAirlines[i]="";
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strAirlines[0]="AER LINGUS";
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strAirlines[1]="AIR ARUBU";
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strAirlines[2]="AMERICAN WEST";
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strAirlines[3]="AMERICAN INTL";
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strAirlines[4]="SOUTHWEST";
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strAirlines[5]="DELTA INTL";
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strAirlines[6]="MARK AIR";
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strAirlines[7]="SAS";
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strAirlines[8]="US AIR";
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strAirlines[9]="CHINA EAST";
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mAirport[0]=new Airport(strAirport,strAirlines);
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//strAirlines=new String[200];
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// for(int i=0;i<200;i++)
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// strAirlines[i]="";
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strAirport="JFK Airport";
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strAirlines[0]="BAER LINGUS";
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strAirlines[1]="BAIR ARUBU";
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strAirlines[2]="BAMERICAN WEST";
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strAirlines[3]="BAMERICAN INTL";
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strAirlines[4]="BSOUTHWEST";
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strAirlines[5]="DELTA INTL";
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strAirlines[6]="MARK AIR";
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strAirlines[7]="SAS";
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strAirlines[8]="US AIR";
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strAirlines[9]="CHINA EAST";
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mAirport[1]=new Airport(strAirport,strAirlines);
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//为什么mAirport[0]的mAirport[0]和mAirport[1]的getAirlines()的结果是一样呢?
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}
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你运行时会发现mAirport[0]和mAirport[1]的getAirlines()的结果是一样的,也就是说mAirport[0]这个Airport类的mAirlines[10]和mAirport[1]的一样,为什么?