?? inheritancetest.java
字號(hào):
/**
* InheritanceTest.java
*
*/
package sample;
public class InheritanceTest {
public static void main(String[] args) {
new SubA(1);
SubA sa = new SubA();
sa.print();
new SubB();
}
}
class SuperA {
private int j = 10;
public SuperA(int i) {
System.out.println("constructor SuperA(int)");
}
public SuperA() {
System.out.println("constructor SuperA()");
}
void print() {
System.out.println("print() in SuperA");
}
}
class SubA extends SuperA {
private int k = 2;
public SubA(int i) {
super(i);
System.out.println("constructor SubA(int)");
}
public SubA() {
//隱含調(diào)用super()-->SuperA()
System.out.println("constructor SubA()");
}
void print() {
super.print();
System.out.println("print() in SubA");
}
}
class SuperB {
public SuperB(String s) {
System.out.println("Constructor superB(String)");
}
}
class SubB extends SuperB {
public SubB() {
super("Hello");
System.out.println("Constructor subB()");
}
}
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