请说出【代码1】-【代码2】的输出结果。注意：结果之间用分号分隔interface Com{ int add(int a,int b);}a

1.请说出E类中【代码1】，【代码2】的输出结果。interface Com { int add(int a,int b);}abstract class A { abstract int add(int a,int b);}class B extends A implements Com{ public int add(int a,int b) { return a*b; }}public class E {public static void main(String args[]) { B b = new B(); Com com = b; System.out.println(com.add(12,6)); //【代码1】 A a = b; System.out.println(a.add(10,5)); //【代码2】 }}

2.请说出E类中【代码1】和【代码2】的输出结果。 interface Com { int add(int a,int b); } abstract class A { abstract int add(int a,int b); } class B extends A implements Com{ public int add(int a,int b){ return a b; } } public class E { public static void main(String args[]){ B b = new B(); Com com = b; System.out.println(com.add(12,6));//【代码1】 A a = b; System.out.println(a.add(10,5)); //【代码2】 } }

3.请说出E类中【代码1】,【代码2】的输出结果.interface Com {int add(int a,int b);}abstract class A{abstract int add(int a,int b);}class Bextends Aimplements Com{public int add(int a,int b){return a+b;}}public class E{public static void main(String args[]){Bb =new B();Com com =b;System.out.println(com.add(12,6));//【代码1】Aa =b;System.out.println(a.add(10,5));//【代码2】}}

4.请说出E类中【代码1】的输出结果。interface Com { int add(int a,int b); }abstract class A { abstract int add(int a,int b); }class B extends A implements Com{ public int add(int a,int b) { return a+b; }}public class E {public static void main(String args[]) { B b = new B(); Com com = b; System.out.println(com.add(12,6)); //【代码1】 }}

5.请说出下面程序中【代码1】和【代码2】的输出结果，以空格隔开。 interface Com { int add(int a, int b); } abstract class A { abstract int add(int a, int b); } class B extends A implements Com { public int add(int a, int b) { return a + b; } } public class Main { public static void main(String args]) { B b = new B(); Com com = b; System.out.println(com.add(12, 6)); //【代码1】 A a = b; System.out.println(a.add(10, 5)); //【代码2】 } }

6.阅读下面的程序，并写出程序的运行结果。interface Com { int add(int a,int b);}abstract class A { abstract int add(int a,int b);}class B extends A implements Com{ public int add(int a,int b) { return a+b; }}public class E { public static void main(String args[]) { B b = new B(); Com com = b; System.out.println(com.add(12,6)); A a = b; System.out.println(a.add(10,5)); }}

7.给出程序结果: interface Com { int add(int a, int b); } abstract class X { abstract int add(int a, int b); } class Y extends X implements Com { public int add(int a, int b) { return a b; } } public class E { public static void main(String[] args) { Y y = new Y(); Com com = y; System.out.println(com.add(12, 6)); X x = y; System.out.println(x.add(10, 5)); } }

8.以下程序的运行结果是（）。Interface Com { int add(intA,int b);}Abstract class A { abstract int add(intA,int b);}Class B extends A implements Com{ public int add(intA,int b) { return a+b; }}Public class Main{Public static void main(String args]) { B b = new B(); Com com = b; System.out.println(com.add(12,6)); A a = b; System.out.println(a.add(10,5)); }} 选项： A:18 18 B:15 15 C:18 15 D:15 18

9.请说出下面中【代码】的输出结果Interface Com { int add(intA,int b); public static int get(int n){ return n; } public default int see(int n){ return n; } public default int look(int n){ return n; }}Class A implements Com{ public int add(intA,int b) { return a+b; } public int see(int n){ return n+1; }}Public class Main { public static void main(String args]) { int m = a add(12,6); int n =Com.get(12); int t = a see(6); int q = a look(6); System.out.printf("%d:%d:%d:%d",m,n,t,q); //【代码】 }}

10.请说出下面中【代码】的输出结果 interface Com { int add(int a,int b); public static int get(int n){ return n; } public default int see(int n){ return n; } public default int look(int n){ return n; } } class A implements Com{ public int add(int a,int b) { return a+b; } public int see(int n){ return n+1; } } public class Main { public static void main(String args]) { int m = a.add(12,6); int n =Com.get(12); int t = a.see(6); int q = a.look(6); System.out.printf("%d:%d:%d:%d",m,n,t,q); //【代码】 } }

11.程序运行结果是（）。interface Com { int add(int a, int b);}abstract class A { abstract double add(double a, double b); }class B extends A implements Com { public int add(int a, int b) { return a + b; } public double add(double a, double b) { return a - b; }}public class E6 { public static void main(String args[]) { B b = new B(); Com com = b; System.out.print(com.add(12, 6)+","); A a = b; System.out.println(a.add(12, 6)); }} 选项：A、6.0,18.0 B、6,18 C、18.0,6 D、18,6.0

12.请说出下面中【代码】的输出结果Interface Com {Int add(intA, int b);Public static int get(int n) {Return n;}Public default int see(int n) {Return n;}Public default int look(int n) {Return n;}}Class A implements Com {Public int add(intA, int b) {Return a + b;}Public int see(int n) {Return n + 1;}}Public class Main {Public static void main(String args]) {Int m=a.add(12, 6);Int n = Com.get(12); int t=a.see(6);Int q=a.look(6);System.out.printf("%d:%d:%d:%d", m, n, t, q); //【代码】}}

13.阅读程序题(给出【代码】注释标注的代码的输出结果)interface Com {int add(int a, int b);public static int get(int n){return n;}public default int see( int n){return n;}public default int look( int n) {return n;}}class A implements Com{public int add( int a, int b) { return a + b;}public int see(int n){ return n + 1;}}public class 习题5_阅读4{public static void main( String args[ ]) {A a = new A();int m = a.add(12,6);int n = Com.get( 12);int t = a.see(6);int q = a.look(6);System.out.printf("%d:%d:%d:%d",m,n, t,q); //【代码】 }}}

14.(单选题, 2分) 请说出E类的输出结果。(　　) interface Com { int add(int a,int b); public static int get(int n){ return n; } public default int see(int n){ return n; } public default int look(int n){ return n; } } class A implements Com{ public int add(int a,int b) { return a+b; } public int see(int n){ return n+1; } } public class E { public static void main(String args]) { int m = a.add(12,6); int n =Com.get(12); int t = a.see(6); int q = a.look(6); System.out.printf("%d:%d:%d:%d",m,n,t,q); //【代码】 } } 选项： A:18:2:7:6 B:18:12:7:6 C:8:12:7:6 D:18:12:7:7

}
}

">15.请说出下面中【代码】的输出结果

interface Com {
int add(int a, int b);

public static int get(int n) {
return n;
}

public default int see(int n) {
return n;
}

public default int look(int n) {
return n;
}
}

class A implements Com {
public int add(int a, int b) {
return a + b;
}

public int see(int n) {
return n + 1;
}
}

public class Main {
public static void main(String args]) {
A a = new A();
int m = a.add(12, 6);
int n = Com.get(12);
int t = a.see(6);
int q = a.look(6);
System.out.printf("%d:%d:%d:%d", m, n, t, q); //【代码】
}
}