程序:
public class Cleanser {
private String s = new String("Cleanser");
public void append(String a) { s += a;}
public void dilute() { append(" dilute()");}
public void apply() { append(" apply()");}
public void scrub() { append(" scrub()");}
public void print() { System.out.println(s);}
public static void main(String[] args) {
Cleanser x = new Cleanser();
x.dilute();
x.apply();
x.scrub();
x.print();
}
}class Detergent extends Cleanser {
public void scrub() {
super.scrub();
append(" Detergent.scrub()");
}
public void foam() { append(" foam()");}
public static void main(String[] args) {
Detergent x = new Detergent();
x.dilute();
x.apply();
x.scrub();
x.foam();
x.print();
System.out.println("Testing base class:");
Cleanser.main(args);
}
}
疑问:Cleanser.main(args)执行的是什么命令?
public class Cleanser {
private String s = new String("Cleanser");
public void append(String a) { s += a;}
public void dilute() { append(" dilute()");}
public void apply() { append(" apply()");}
public void scrub() { append(" scrub()");}
public void print() { System.out.println(s);}
public static void main(String[] args) {
Cleanser x = new Cleanser();
x.dilute();
x.apply();
x.scrub();
x.print();
}
}class Detergent extends Cleanser {
public void scrub() {
super.scrub();
append(" Detergent.scrub()");
}
public void foam() { append(" foam()");}
public static void main(String[] args) {
Detergent x = new Detergent();
x.dilute();
x.apply();
x.scrub();
x.foam();
x.print();
System.out.println("Testing base class:");
Cleanser.main(args);
}
}
疑问:Cleanser.main(args)执行的是什么命令?
就当作一个类的static方法