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1.ÆÕͨ´úÂë¿é£º¶¨ÒåÔÚ·½·¨ÖеĴúÂë¿é¡£
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public class Ex22 {

public static void main(String[] args){
// ÆÕͨ´úÂë¿é
{
int i = 3;
System.out.println("¾Ö²¿±äÁ¿Îª " + i);
}
int i = 5;
System.out.println("Ïà¶ÔÉÏÃæµÄ i À´ËµÊÇÈ«¾ÖµÄ±äÁ¿ " + i);

}


}
//¾Ö²¿±äÁ¿Îª 3
//Ïà¶ÔÉÏÃæµÄ i À´ËµÊÇÈ«¾ÖµÄ±äÁ¿ 5
2.¹¹Ôì¿é£ºÖ±½ÓÔÚÀàÖбàдµÄ´úÂë¿é¡£
class Demo5{
{
System.out.println("¹¹Ôì¿é");
}
public Demo5(){
System.out.println("¹¹Ôì·½·¨");
}
{
System.out.println("¹¹Ôì·½·¨ºóµÄ¹¹Ôì¿é");
}
}
public class Ex22 {

public static void main(String[] args){
new Demo5();
new Demo5();

}


}
//¹¹Ôì¿é
//¹¹Ôì·½·¨ºóµÄ¹¹Ôì¿é
//¹¹Ôì·½·¨
//¹¹Ôì¿é
//¹¹Ôì·½·¨ºóµÄ¹¹Ôì¿é
//¹¹Ôì·½·¨

¶ÔÏó±»ÊµÀý»¯Ò»´Î¹¹Ôì¿é¾ÍÖ´ÐÐÒ»´Î£»
¹¹Ôì¿éÓÅÏÈÖ´Ðбȹ¹Ôì·½·¨.
3.¾²Ì¬´úÂë¿é:static ¹Ø¼ü×ÖÉùÃ÷µÄ´úÂë¿é.
class Demo5{
{
System.out.println("1¹¹Ôì¿é");
}
public Demo5(){
System.out.println("2¹¹Ôì·½·¨");
}
{
System.out.println("3¹¹Ôì·½·¨ºóµÄ¹¹Ôì¿é");
}
static {
System.out.println("4¾²Ì¬´úÂë¿é");
}

}
public class Ex22 {
static {
System.out.println("ÔÚÖ÷·½·¨ÀàÖж¨ÒåµÄ´úÂë¿é");
}

public static void main(String[] args){
new Demo5();
new Demo5();

}


}
//ÔÚÖ÷·½·¨ÀàÖж¨ÒåµÄ´úÂë¿é
//4¾²Ì¬´úÂë¿é
//1¹¹Ôì¿é
//3¹¹Ôì·½·¨ºóµÄ¹¹Ôì¿é
//2¹¹Ôì·½·¨
//1¹¹Ôì¿é
//3¹¹Ôì·½·¨ºóµÄ¹¹Ôì¿é
//2¹¹Ôì·½·¨
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