Java面向对象程设计测试试卷.docVIP

阅读下面的程序代码，写出运行结果。 7*10 70分 1、//Person.java public class Person String song; String sport; void sing System.out.print My favarate song is+ song ; void doSport System.out.print My favarate sport is+ sport ; public static void main String[] args Person p1 new Person ; p1.song pop music; p1.sing ; 2． //Test1.java public class Test1 public static void main String[] args StaticA.f ; new StaticA .f ; class StaticA static int count 4 ; public static void f System.out.println count++ ; 3. //Test2.java public class Test2 Test2 System.out.println Constructor Test2 is executed . ; Test2 int i this ; System.out.println Constructor Test2 int i is executed . ; public static void main String[] args new Test2 2 ; 4. //Test3.java public class Test3 public static void main String[] args new A .A ; class A A System.out.println Constructor A ; void A System.out.println Method A ; 5.public class Shape float getArea float r return 3.14f*r*r; int getArea int a,int b return a*b; double getArea double a,double b return a*b; double getArea int a,int b,int c if a+b c||a+c b ||b+c a double p 1/2* a+b+c ; return Math.sqrt p* p-a * p-b * p-c ; else return 0; public static void main String args[] Shape square new Shape ; System.out.println square.getArea 3,4 ; Shape round new Shape ; System.out.println round.getArea 3 ; Shape tri new Shape ; System.out.println tri.getArea 3,4,5 ; 6. // Test5.java public class Test5 public static void main String[] args new S ; class P P System.out.println Constructor P ; class S extends P S System.out.println Construtor S ; 7. // Test7.java public class Test7 public static void main String[] args Test7 t new Test7 ; t.f ; t.f 3.0, 4.0 ; t.f false ; private void f boolean b System.out.println Method f boolean is executed . ; private void f double d, double e System.out.println Method f double d, double e is executed . ; private void f int i this.f ; private void f System.out.println Method f is executed