public class test {
void show() {
System.out.println("父類別");
}
}
public class test2 extends test{
void show() {
System.out.println("子類別");
}
void Ha() {
System.out.println("Ha");
}
}
public class Gogo {
public static void main(String[] args) {
test T1 = new test();
test2 T2 = new test2();
T1.show();
T2.show();
T1 = T2;
T1.show();
父子同樣具有show()時，將優先執行子類別
/父類別
/子類別
/子類別
public class test {
void show(String i) {
System.out.println("父類別");
}
}
public class test2 extends test{
void show() {
System.out.println("子類別");
}
void Ha() {
System.out.println("Ha");
}
}
public class Gogo {
public static void main(String[] args) {
test T1 = new test();
test2 T2 = new test2();
T1.show("ss");
T2.show();
T1 = T2;
T1.show("ss");
}
}
子不具有show(String)，往父類找，找到發法，執行父類別方法
/父類別
/子類別
/父類別