A: public void say(){ System.out.print(“Hi”); }
B: public void say(){ System.out.print(“Hi”); return; }
C: public int say(){ System.out.print(“Hi”); return; }
D: public int say(){ System.out.print(“Hi”); return 0; }
举一反三
- 有如下类的定义，Inner类称为。 public class Outer{ class Inner{ public void go(){ System.out.print("hi"); } } }
- 下列选项中，循环会无限执行的是______。 A: int i = 1 ; while ( i < 10) System .out .print( “ ” + i) ; B: for( int i = 1 ; i < 10 ;i ++) System .out .print( “ ” + i); C: for( int i = 10 ; i > 0 ;i --) System .out .print( “ ” + i); D: int i = 1 ; while (true) { System .out .print( “ ” + i); i ++ ; if ( i > 5) break ;
- import java.io.*; class Person{ public void print(){System.out.print("Person ");} public void printMyGender(String s){ this.print(); System.out.print(s+" "); } } class Gender{ String type="gender"; public void print(Person p){p.printMyGender(type);} } class Female extends Gender{ public Female(){ type="female"; } } class Male extends Gender{ public Male(){ type="male"; } } class Employee extends Person{ public void print(){ System.out.print("Employee ");} } class Manager extends Employee{ public void print(){ System.out.print("Manager ");} } public class Test{ public static void main(String[] args){ Manager man = new Manager(); Employee em = new Employee(); Gender gender1 = new Male(); Gender gender2 = new Female(); gender1.print(man); gender2.print(em); } } 对于以上代码，其运行结果是
- 下列程序的运行结果是（）。 public class Test public static void main ( String [ ] args ) int count = 0 for( int i = 1 i < 5 i = 2) for( int j = 1 j< = 10 j = 3) count System .out .print (count ) _
- 读程序，写出和程序输出格式一致的输出结果。 public class J_Test { public static void mb_method(int i) { try { if(i == 1) throw new Exception(); System.out.print("1"); } catch(Exception ex) { System.out.print("2"); return; } finally { System.out.print("3"); } System.out.print("4"); } public static void main(String[] args) { mb_method(0); mb_method(1); } }
内容
- 0
以下程序的运行结果是：() public class Increment{ public static void main(String args[]) { int a; a = 6; System.out.print(a); System.out.print(a++); System.out.print(a); } }
- 1
以下程序的运行结果是：( )public class Increment{ public static void main(String[] args) { int a; a = 6; System.out.print(a); System.out.print(a++); System.out.print(a); System.out.print(--a); System.out.print(a); }} A: 66666 B: 66766 C: 67766 D: 67666
- 2
现有如下程序： public static void main(String[] args){ int i=0;[br][/br] System.out.print(i++); System.out.print(i++); System.out.print(i++); System.out.print(i); int j=0; System.out.print(++j); System.out.print(++j); System.out.print(++j); System.out.print(j); } A: 01231233 B: 01230123 C: 12331233 D: 12301234
- 3
以下程序的运行结果是 public class test{ public static void main(String[] args) { int a; a = 6; System.out.print(a); System.out.print(a++); System.out.print(a); } } A: 666 B: 667 C: 677 D: 676
- 4
以下程序的运行结果是：( ) public class Increment{ public static void main(String args[]) { int a; a = 6; System.out.print(a); System.out.print(a++); System.out.print(a); } } A: 666 B: 667 C: 676 D: 677