outerreference.java

来自「JAVA编程思想源代码 值得一下 很难找的」· Java 代码 · 共 31 行

package chapter6;

public class OuterReference {

	public static void main(String[] args) {
		OuterY outer = new OuterY();
		OuterY.Inner inner = outer.getInner();
		inner.print();
	}

}

class OuterY {
	private int index = 100;

	class Inner {
		private int index = 50;

		void print() {
			int index = 30;
			System.out.println("index = " + index); // 30
			System.out.println("this.index = " + this.index); // 50
			System.out.println("OuterY.this.index = " + OuterY.this.index); // 100
		}
	}

	Inner getInner() {
		return new Inner();//返回一个内部类的引用
	}
}