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Àý×Ó 1 public void show1(int str)
{
Str=4;
}
public static void main(String[] args) {
int k=1;
System.out.println(id);
s.show1(str);
System.out.println(id);
}
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1
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Àý×Ó 2 public void show1(List list)
{
List.add(“dddddd”);
}
public static void main(String[] args) {
List list=new ArrayList()
System.out.println(list.size);
s.show1(list);
System.out.println(list.size);
}
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1
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Àý×Ó 3 public void show1(String str)
{
str=new String("dddddddddddddd");
}
public static void main(String[] args) {
String str=new String ("liaomin"); System.out.println(str);
s.show1(str);
System.out.println(str);
}
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/*¶à̬ʾÀý*/
package demo;
class AA {
public void f(){
System.out.println("f in AA");
}
}
class BB extends AA{
public void f(){
System.out.println("f in BB");
}
}
public class Test_Dt {
public static void main(String[] args) ......
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Ϊʲô Date b1=new Date(623289600000); ²»¿ÉÒÔ£¬ÏÂÃæµÄÈ´¿ÉÒÔÄØ£¿
long a=623289600000L;
Date b1=new Date(a); Ò ......
/**
* ´¦Àíʱ¼äÒì³£ Date to String
* Èç¹ûת»»³öÏÖÒì³£»á¸øĬÈÏÖµ00:00
* @param time
* @param sdf
* @return
*/
public static String handleDateParseException(Object time){
String tempTime = "00:00";
try{
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