Java运行程序写结果(学生版)

1、最新Java运行程序写结果(学生版)Java练习题二、运行程序写结果1. 当在命令提示符后输入java SumTest 4 5”之后，以下程序的输出结果为： public class SumTest public static void main(String args) int a, b, sum; a=Integer.parseInt(args0); b=Integer.parseInt(args1); sum=a+b; System.out.println(a + + + b + = + sum); 2. 当在命令提示符后输入java PrintStar 8”之后，以下程序的输出结果为：

2、 public class PrintStar public static void main(String args) int n = Integer.parseInt(args0);int i;for( i=1; i=n; i+)System.out.print(*);System.out.println();3. 当在命令提示符后输入java CalculateTest 5.5”之后，以下程序的输出结果为： public class CalculateTestpublic static void main(String args)float x,y; x = Float.parseFlo

3、at(args0); if(x1)y = x;else if(1=x&x10)y = 2*x-1;elsey = 3*x-11;System.out.println(y);4. 当在命令提示符后输入java Factorial3 3”之后，以下程序的输出结果为： public class Factorial3 public static void main(String args) int num = Integer.parseInt(args0);int result = 1;if(num1)System.out.println(应输入大于1的整数！);elseint i;for( i=1;

4、 i=num; i+)result = result*i;System.out.println(结果是：+result);5. 以下程序的输出结果为： public class X public static void main(String args) String names=new String5; for(int x=0;xargs.length;x+) namesx=argsx; System.out.println(names2); 6. 以下程序的输出结果为: public class Testpublic static void main(String args) System

5、.out.print ( 3.5+1/2+56%10+ ); System.out.print ( 3.5+1.0/2+56%10+ ); int a = 4%3*7+1;System.out.println( a ); 7. 以下程序的输出结果为： public class A1 public static void main(String args) int a=new int5; a0=1; a1=2; a2=3; a3=4; a4=5;System.out.print(a+0+ = +a0+ ); System.out.print(a+1+ = +a1+ ); System.out.p

6、rintln(a+2+ = +a2+ ); System.out.print(a+3+ = +a3+ ); System.out.print(a+4+ = +a4); 8. 以下程序的输出结果为： public class array1D_1 public static void main(String args) int i;int a ; a = new int5; for(i=0;i=0;i-) System.out.print(“a“ +i + = + ai + ,t);9. 运行结果是： public class Test1 String str = new String(Hi !)

7、;char ch = L, i, k, e ;public static void main(String args) Test1 ex = new Test1();System.out.print(ex.str + );System.out.print(ex.ch);10. 运行结果是： public class Test3 public static void main(String args) int i;for (i = 3; i = 20; i +) if (i % 2) = 0)System.out.print(i + );11. 运行结果是： public class Test4

8、 public static void main(String args) int i,sum=0;for (i = 3; i = 20; i +) if (i % 2) = 0) sum=sum+i;System.out.print(i=+i+,sum=+sum);12. 运行结果是： public class Test5 public static void main(String args) int i,sum=0;for (i = 1; i = 100; i +) if (i % 2) = 1)sum=sum+i;System.out.println(sum);13. 运行结果是： c

9、lass Test6 public static void main(String args) int i; for(i=0;i10;i+) System.out.print(i+ ); if (i%2!=0) continue; System.out.println( ); 14、运行结果是： public class Test14 public static void main(String args) int n = 1, m, j, i;for (i = 3; i = 30; i += 2) m = (int) Math.sqrt(double) i);for (j = 2; j =

10、m + 1) System.out.print(i + );if (n % 5 = 0)System.out.print(n);n+;15. 以下程序的输出结果为： public class Test1 public static void main(String args) int y, x=1, total=0; while(x=10) y=x*x; System.out.print(y+ ); total+=y; +x; System.out.print(total is +total); 16. 以下程序的输出结果为： public class WhileExamplepublic s

11、tatic void main(String args)String copyFromMe=Copy every letter until you encounter u.; StringBuffer copyToMe=new StringBuffer(); /创立一个空的串变量int i=0;char c=copyFromMe.charAt(i); while(c!=u) copyToMe.append(c); c=copyFromMe.charAt(+i); System.out.println(copyToMe);17. 以下程序的输出结果为： public class BreakExa

12、mplepublic static void main(String args)int array=32,87,3,589,12,1076,2000,8,622;int search = 1076, i=0, j=0;boolean foundIt = false;for (i=0; i3; i+) for (j=0; j3; j+)if (arrayij = search) foundIt = true; break; /跳出内层循环if(foundIt) break; /跳出外层循环if(foundIt) System.out.println(Found + search + at i =

13、 + i +, j = + j);else System.out.println(search + is not in the array);18. 以下程序的输出结果为： public class SumDemo2 public static void main(String args) int sum = 0, i = 0;doif(i%2=0)sum = sum+i;i+;while(i=20);System.out.println(其最终和是：+sum);19. 以下程序的输出结果为: public class AddTest public static void main(Strin

14、g args) int num1,num2;num1 = 10;num2 = 20;System.out.println(num1 + + + num2 + = + add(num1,num2);static int add(int op1,int op2)return op1+op2;20. 以下程序的输出结果为： class generalFunctionpublic static int add(int x,int y) return x+y; /静态方法public class StaticFunTestpublic static void main(String args)int c

15、=generalFunction.add(7, 8);System.out.print(7 + 8 = + c+ “, “);generalFunction fun=new generalFunction();int d= fun.add(5, 8); System.out.println(5 + 8 = + d);21. 以下程序的输出结果为 class Boxint length,width,height;public void setInfo(int l,int w,int h)length = l;width = w;height = h;public int volumn()retu

16、rn length*width*height;public int area()return (length*width + length*height + width*height) * 2;public String toString()return Length: + length + width: + width + height: + height + volumn: + volumn() + area: + area();public class BoxTest public static void main(String args) Box b = new Box(); b.se

17、tInfo(5,2,4);System.out.println(b.toString();22. 以下程序的输出结果为： public class Example String str=new String(good); charch=a,b,c; public static void main(String args) Example ex=new Example(); ex.change(ex.str,ex.ch); System.out.print(ex.str+ and ); System.out.print(ex.ch); public void change(String str,

18、char ch) str=test ok; ch0=g; 23. 以下程序的输出结果为： /arrayParam1.java 以数组为参数的方法调用public class arrayParam1 public static void main(String args )int a = 8, 3, 7, 88, 9, 23; LeastNumb MinNumber=new LeastNumb();MinNumber.least(a); class LeastNumbpublic void least(int array ) int temp = array0;for(int i=0;iarra

19、yi) temp = arrayi;System.out.println(最小的数为: + temp);24. 运行结果是： (B6)(p50例4.11) import java.awt.*;import java.applet.*;class MemberVar static int sn = 30;final int fn;final int fk = 40;MemberVar() fn = +sn;public class Test10 extends Applet public void paint(Graphics g) MemberVar obj1 = new MemberVar(

20、); MemberVar obj2 = new MemberVar(); g.drawString(obj1.fn= + obj1.fn, 20, 30); g.drawString(obj1.fk= + obj1.fk, 20, 50); g.drawString(obj2.fn= + obj2.fn, 20, 70); g.drawString(obj2.fk= + obj2.fk, 20, 90);25. 以下程序的输出结果为： class A static int y=3; void showy( )System.out.println(y=+y); class testA publi

21、c static void main(String aaa) A a1=new A( ); A.y+=1; a1.y+; a1.showy( ); 26. 运行结果是： public class Test9 static boolean foo(char c) System.out.print(c); return true; public static void main( String argv ) int i =0; for ( foo(B); foo(A)&(i2); foo(C) i+ ; foo(D); 27. 运行结果是： import java.io.*;public clas

22、s Test2 public static void main(String args) Sub sb = new Sub( ); System.out.println(sb.method( ); class Father int a=3 , b=2 ; int method() return a-b; class Sub extends Father int method2( ) return a+b; 28. 以下程序的输出结果为 class Aclass void go() System.out.println(Aclass); public class Bclass extends A

23、class void go() System.out.println(Bclass); public static void main(String args) Aclass a=new Aclass(); Aclass a1=new Bclass(); a.go(); a1.go(); 29. 以下程序的输出结果为: class Ball private double r;public void setR(double x)r = x;public double getR()return r;class Billiards extends Ballprivate String color;p

24、ublic void setCol(String col)color = col;public void show()System.out.println(台球的颜色是+color+,半径是+getR();public class Demopublic static void main(String args)Ball b1 = new Ball();b1.setR(10);System.out.println(球的半径是+b1.getR();Billiards b2 = new Billiards();b2.setR(5);b2.setCol(蓝色);b2.show();30. 运行结果是：

25、 public class Test12 extends TTpublic static void main(String args) Test12 t = new Test12 (Tom);public Test12(String s)super(s);System.out.println(How do you do?); public Test12()this(I am Tom); class TT public TT() System.out.println(What a pleasure!); public TT(String s)this();System.out.println(I

26、 am +s);31. 运行结果是： public class Test13 extends TTpublic static void main(String args) Test13 t = new Test13 ( );public Test13(String s)super(s);System.out.println(How do you do?); public Test13()this(I am Tom); class TT public TT() System.out.println(What a pleasure!); public TT(String s)this();Syst

27、em.out.println(I am +s);32. 以下程序的输出结果为: interface IShapepublic double area();class square implements IShapedouble length ;public square(double l)length = l;public double area()return length*length;public class Test public static void main(String args) square s = new square(5); System.out.println(s.a

28、rea();33. 运行结果是： class Test11class Dog private String name;private int age;public int step;Dog(String s, int a) name = s;age = a;step = 0;public void run(Dog fast) fast.step+;public static void main(String args) Test11 a = new Test11();Dog d = a.new Dog(Kate, 5);d.step = 35;d.run(d);System.out.print

29、ln( + d.step);34. 运行结果是： public class Test15 private static int count;private String name;public class Student private int count;private String name;public void Output(int count) count+;this.count+;Test15.count+;Test15.this.count+;System.out.println(count + + this.count + + Test15.count + + Test15.t

30、his.count);public Student aStu() return new Student();public static void main(String args) Test15 g3 = new Test15();g3.count = 10;Test9.Student s1 = g3.aStu();s1.Output(5); 35. 以下程序的输出结果为： public class Q1 public static void main(String args) trythrow new MyException(); catch(Exception e)System.out.p

31、rintln(“Its caught!);FinallySystem.out.println(“Its finally caught!);class MyException extends Exception36. 运行结果是： public class Test10 public static void aMethod() throws Exceptiontrythrow new Exception();catch(Exception e)System.out.println(exception000);finallySystem.out.println(finally111);public

32、 static void main(String args)tryaMethod();catch(Exception e)System.out.println(exception);System.out.println(finished);37. 运行结果是： public class Test10 public static void aMethod() throws Exceptiontrythrow new Exception();finallySystem.out.println(finally111);public static void main(String args)tryaM

33、ethod();catch(Exception e)System.out.println(exception);System.out.println(finished);38. 运行结果是： public class Test10 public static void aMethod() throws Exceptiontrythrow new Exception();catch(Exception e)System.out.println(exception000);public static void main(String args)tryaMethod();catch(Exception e)System.out.println(exception);System.out.println(finished);39. 运行结果是： public class Test1 public static String output = ;public static void foo(int i)tryif(i=1)throw new Exception();output +=