内部类形式的继承类

public class test {

	private final int a;

	public test(int a) {
		this.a = a;
	}

	private int getA() {
		return a;
	}

	public void exec() {
		new test(1) {
			public void print() {
				System.out.println(getA());// 0
			}
		}.print();
	}

	public static void main(String[] args) {
		new test(0).exec();
	}
}

 

public class test {

	private final int a;

	public test(int a) {
		this.a = a;
	}

	public int getA() {
		return a;
	}

	public void exec() {
		new test(1) {
			public void print() {
				System.out.println(getA());// 1
			}
		}.print();
	}

	public static void main(String[] args) {
		new test(0).exec();
	}
}

 

差别在于getA()方法的可见性