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package pkg1;
public class Jupiter
{
void method1(){
System.out.println("In Jupiter");
}
public void call(){
method1();
}
}
package pkg2;
import pkg1.Jupiter;
public class Minerva extends Jupiter{
public void method1(){
System.out.println("In Minerva");
}
public static void main(String[] args) {
new Minerva().call();
}
}
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A ±àÒë´íÎó
B In Jupiter
C In Minerva
D In
Jupiter 
  In Minerva
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×ÓÀàMinervaÎÞ·¨·ÃÎʵ½¸¸ÀàµÄmethod1·½·¨£¬¹Ê×ÓÀ಻»áÖØд¸¸ÀàµÄmethod1º¯Êý£¬
ËùÔÚµØÒÔMinerva().call()½«Ö±½Óµ÷Óø¸ÀàµÄmethod1,
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public         Y           Y                 Y              Y
private       Y           N                 N             N
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import java.text.DateFormat;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
public class CompareTime {
public static void main(String[] args){
String t1 = "2008-05-09";
String t2 = "20 ......

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