//外部类
class Out {
private int age = 12;
//内部类
class In {
public void print() {
System.out.println(age);
}
}
}
public class Demo {
public static void main(String[] args) {
Out.In in = new Out().new In();
in.print();
//或者采用下种方式访问
/*
Out out = new Out();
Out.In in = out.new In();
in.print();
*/
}
}
class Out {
private int age = 12;
class In {
private int age = 13;
public void print() {
int age = 14;
System.out.println("局部变量:" + age);
System.out.println("内部类变量:" + this.age);
System.out.println("外部类变量:" + Out.this.age);
}
}
}
public class Demo {
public static void main(String[] args) {
Out.In in = new Out().new In();
in.print();
}
}
class Out {
private static int age = 12;
static class In {
public void print() {
System.out.println(age);
}
}
}
public class Demo {
public static void main(String[] args) {
Out.In in = new Out.In();
in.print();
}
}
class Out {
private int age = 12;
private class In {
public void print() {
System.out.println(age);
}
}
public void outPrint() {
new In().print();
}
}
public class Demo {
public static void main(String[] args) {
//此方法无效
/*
Out.In in = new Out().new In();
in.print();
*/
Out out = new Out();
out.outPrint();
}
}
class Out {
private int age = 12;
public void Print(final int x) {
class In {
public void inPrint() {
System.out.println(x);
System.out.println(age);
}
}
new In().inPrint();
}
}
public class Demo {
public static void main(String[] args) {
Out out = new Out();
out.Print(3);
}
}
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