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class A {
public String show(D obj){
return ("A and D");
}
public String show(A obj){
return ("A and A");
}
public String show(C obj){
return ("A and C");
}
}
class B extends A{
public String show(B obj){
return ("B and B");
}
public String show(A obj){
return ("B and A");
}
public String show(C obj){
return ("B and C");
}
}
class C extends B{}
class D extends B{}
class Test{
public static void main(String[] args){
A a1 = new A();
A a2 = new B();
B b = new B();
C c = new C();
D d = new D();
System.out.println(a1.show(b)); &nb
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public class Test{
public static  ......
JAVA_HOME:
C:\Java\jdk1.6.0_17
Path:
%JAVA_HOME%\bin
ClassPath:
.;%JAVA_HOME%\lib\tools.jar;%JAVA_HOME%\lib\dt.jar
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static int MAX_VALUE£º·µ»Ø×î´óµÄÕûÐÍÊý£»
static int MIN_VALUE£º·µ»Ø×îСµÄÕûÐÍÊý£»
static Class TYPE £º·µ»Øµ±Ç°ÀàÐÍ¡£
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System.out.println("Integer.MAX_VALUE: " + Integer.MAX_VALUE );
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&nb ......