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JavaÄÚ²¿ÀࣨInner Class£©

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1 Static member class£¨¾²Ì¬³ÉÔ±Àࣩ
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Inner1/Inner2/Inner3/Inner4¾ÍÊÇOuterµÄËĸö¾²Ì¬³ÉÔ±Àà¡£¾²Ì¬³ÉÔ±ÀàµÄʹÓ÷½Ê½ÓëÒ»°ã¶¥²ãÀàµÄʹÓ÷½Ê½»ù±¾Ïàͬ¡£
public class Outer{
//just like static method, static member class has public/private/default access privilege levels

//access privilege level: public
public static class Inner1 {
public Inner1() {
//Static member inner class can access static method of outer class
staticMethod();
//Compile error: static member inner class can not access instance method of outer class
//instanceMethod();
}
}

//access privilege level: default
static class Inner2 {

}

//access privilege level: private
private static class Inner3 {
//define a nested inner class in another inner class
public static class Inner4 {
}
}
private static void staticMethod() {
//cannot define an inner class in a method
/*public static class Inner4() {
}*/
}

private void instanceMethod() {
//private static member class can be accessed only in its outer class definition scope
Inner3 inner3 = new Inner3();
//how to use nested inner class
Inner3.Inner4 inner4 = new Inner3.Inner4();
}
}
class Test {
Outer.Inner1 inner1 = new Outer.Inner1();
//Test and Outer are in the same package, so Inner2 can be accessed here
Outer.Inner2 inner2 = new Outer.Inner2();
//Compile error: Inner3 cannot be accessed here
//Outer.Inner3 inner3 = new Outer.Inner3();
}

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import java.io.BufferedReader;
import java.io.InputStreamReader;
public class LRU {
 int blockCount;
 int seriaCount;
 int[] address;
 int[] stack;
 BufferedReader br;
 public static void main(String[] args) {
  // int address[] = { 1, 2,3, 2, 8, 4, 3 ......

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