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2¡¢ÏÂÃæÊÇÒ»¸öjavaÓ¦ÓóÌÐò£¨Application£©£¬ËüµÄ¹¦ÄÜÊÇÔÚÆÁÄ»ÉÏÊä³ö26¸öСдӢÎÄ×Öĸ£¬ÆäÖÐÿ¸ö×ÖĸÏà¸ôÒ»¸öÖÆ±í·û£¬ÇëÍê³É³ÌÐòÌî¿Õ£¿ public __class___ Class1 {
public static void main( String args[] ) {
char c='a';
for (int i=1;i<=26;i++)
{ System.out.print(_c+++_¡±\\t¡±____); } } }
3¡¢ÏÂÃæÊÇÒ»¸öjavaÓ¦ÓóÌÐò£¨Application£©£¬ËüµÄ¹¦ÄÜÊǼÆËã s=1+2+3+...+10 £¬ÇëÍê³É³ÌÐòÌî¿Õ£¿ public __class___ Class1
{ public static void main( String args[] ) { int s=0;
for (int i=1;i<=10;i++) {
s+=_i__; }
System.out.println(\}
4¡¢ÏÂÃæÊÇÒ»¸öjava Application µÄÖ÷ÀàµÄ¶¨Ò壬Æä¹¦ÄÜÊÇÊä³ö³Ë·¨¿Ú¾÷±íµÚÒ»ÁУ¬ÇëÍê³É³ÌÐòÌî¿Õ£¿ import java.io.*; public class MyClass {
public static void main(String[] args) {
int j=1;
for(int i=1; ___i<10____; i++)
{ System.out.println(i+\_i _); } } }
5¡¢ ÏÂÃæÊÇÒ»¸öÀàµÄ¶¨Òå,¸ù¾ÝÌâĿҪÇ󻨴ðÒÔÏÂÎÊÌ⣿
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class B { int x; char y;
public B(int i,char j) { x=i; y=j; } public void show() { System.out.println(\} public void methodC(int x1) { x=x+x1; y++; show(); } }
1)¶¨ÒåÀàBµÄÒ»¸ö¶ÔÏób£¬½«ÀàÖеıäÁ¿x³õʼ»¯Îª10¡¢±äÁ¿y³õʼ»¯Îª¡¯A¡¯£¬Çëд³öÏàÓ¦µÄÓï¾ä¡££¿
B b=new B(10,¡¯A¡¯) ;
2)ÈôÔÚ1)ÎÊ»ù´¡ÉÏÓз½·¨µ÷ÓÃÓï¾ä£ºb.show()ÔòÊä³öÈçºÎ£¿ x=10;y=¡¯A¡¯
3)ÈôÔÚ1)ÎÊ»ù´¡ÉÏÔö¼ÓÓï¾ä: b.methodC(1); ÔòÊä³öΪºÎ£¿ x=11;y=¡¯B¡¯
6¡¢ÏÂÃæÊÇÒ»¸öÀàµÄ¶¨Ò壬ÇëÍê³É³ÌÐòÌî¿Õ¡£ public class ____Myclass________ { int x, y;
Myclass (_int i,int j_____) // ¹¹Ôì·½·¨ { x=i; y=j; } }
6¡¢ ÒÔÏ·½·¨funµÄ¹¦ÄÜÊÇÇóÁ½²ÎÊýÖ®»ý¡£
int fun ( int a, int b ) { __return_a*b_;_____ }
7¡¢ ÒÔÏ·½·¨funµÄ¹¦ÄÜÊÇÇóÁ½²ÎÊýÖ®»ý¡£ float fun ( int a, double b )
{ __return (float)(a*b);__________ } 8¡¢ ÒÔÏ·½·¨funµÄ¹¦ÄÜÊÇÇóÁ½²ÎÊýµÄ×î´óÖµ¡£ int fun ( int a, int b ) {___if(a>b) return a;
else return b;_ }
9¡¢ ÒÔÏ·½·¨mµÄ¹¦ÄÜÊÇÇóÁ½²ÎÊýÖ®»ýµÄÕûÊý²¿·Ö¡£ int m ( float x, float y )
{ __return (int)(x*y);__________ }
10¡¢ ÏÂÃæ·½·¨µÄ¹¦ÄÜÊÇÅжÏÒ»¸öÕûÊýÊÇ·ñΪżÊý£¬½«³ÌÐò²¹³äÍêÕû¡£ public _boolean____ isEven(int a) { if(a%2==0)
return _true___; else
return _false____; }
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11¡¢ÏÖÓÐÀà˵Ã÷ÈçÏ£¬Çë»Ø´ðÎÊÌ⣺ public class A {
String str1=\
String str2=\ public String toString( ) { return str1+str2; } }
public class B extends A {
String str1=\£¬Bill.\ public String toString( ) { return super.str1+str1; } }
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1)ÀàAºÍÀàBÊÇʲô¹ØÏµ£¿(´ð£º¼Ì³Ð¹ØÏµ)
2)ÀàAºÍÀàB¶¼¶¨ÒåÁËstr1ÊôÐԺͷ½·¨toString( )£¬ ÕâÖÖÏÖÏó·Ö±ð³ÆÎªÊ²Ã´£¿£¨´ð£ºÊôÐÔµÄÒþ²Ø£»·½·¨µÄ¸²¸Ç£©
3)ÈôaÊÇÀàAµÄ¶ÔÏó£¬Ôòa.toString( )µÄ·µ»ØÖµÊÇʲô£¿ (´ð£ºHello! How are you?)
4)ÈôbÊÇÀàBµÄ¶ÔÏó£¬Ôòb.toString( )µÄ·µ»ØÖµÊÇʲô£¿(´ð£ºHello£¬Bill.) 12.ÏÖÓÐÒ»¸öÀඨÒåÈçÏ£¬Çë»Ø´ðÎÊÌ⣿ class Employee {
String name; int age; double wage; static int No=0;
Employee(String a1,int a2,double a3) {
name=a1; age=a2; wage=a3; No++; } }
ÔÚʹÓøÃÀàʱ,ÒÑʹÓÃÏÂÃæÓï¾äÉú³ÉÁ˸ÃÀàµÄ¶ÔÏó: Employee e1,e2;
e1=new Employee(\Íõ¾¢\ e2=new Employee(\ÕÅɽ\ÎÊÌ⣺
1)e2.name,e2.age,e2.wageµÄÖµ¸÷ÊÇʲô£¿(´ð£ºÕÅɽ;30;3800.0)
2)Éú³É¶ÔÏóe1¡¢e2ºó£¬e1.NoֵΪ¶àÉÙ£¿ÄÜ·ñͨ¹ýÀàÃû×öǰ׺ÒýÓÃÊôÐÔNo? (´ð£º2; ÄÜ)
²¹³ä£ºe1.No=e2.No=Employee.No=2
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13.ÔĶÁ³ÌÐò£¬»Ø´ðÎÊÌâ¡£ public class InheritTest1 {
public static void main (String[] args) {
A aa; B bb;
aa=new A( ); bb=new B( ); aa.show( ); bb.show(); } }
class A {
int a=1;
double d=2.0; void show( )
{ System.out.println(\}
class B extends A {
float a=3.0f;
String d=\ int b=4;
void show( ) {
System.out.println(\ super.show( );
System.out.println(\ } }
ÎÊÌ⣺1£©ÕâÊÇÄÄÒ»Ààjava³ÌÐò?£¨´ð£ºjavaÓ¦ÓóÌÐò£©
2£©ÀàAºÍÀàBÊÇʲô¹ØÏµ£¿£¨´ð£ºÀàBÊÇÀàAµÄ×ÓÀࣩ
3£©°´³ÌÐòÊä³öµÄ¸ñʽд³ö³ÌÐòÔËÐкóµÄ½á¹û£¿ Class A: a=1 d=2.0 Class A: a=1 d=2.0 Class A: a=1 d=2.0
Class B: a=3.0 d=Java program. b=4 14.ÏÖÓÐÀà˵Ã÷ÈçÏ£¬Çë»Ø´ðÎÊÌ⣺ class A {
int x=10;
int getA(){return x;} }
class B extends A {
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