1 package test_15_2; 2 3 public interface Destination { 4 5 String readLabel(); 6 }
1 package test_15_2; 2 3 public class Outer { 4 5 // 如果定义一个匿名内部类,并希望它使用一个在外部定义的对象,那么引用参数必须是final的,否则编译错误 6 public Destination destination(final String dest) { 7 8 return new Destination() { 9 10 private String label = dest; 11 12 @Override 13 public String readLabel() { 14 15 return label; 16 } 17 }; 18 } 19 20 public static void main(String[] args) { 21 22 Outer outer = new Outer(); 23 Destination d = outer.destination("Persona"); 24 25 System.out.println(d.readLabel()); 26 27 } 28 }