現(xiàn)有: class TestFoo { int x; String y; int getX() { return x; } String getY() { return y; } void setX(int x) { int z = 7; this.x = x; } } 可以添加多少個修飾符來封裝此類?()
A. 2 B. 3 C. 4 D. 5
A. import java.sql.*; package school; class Student{ } B. package school; import java.sql.*; class Student{ } C. package school; class Student{ } import java.sql.*; D. package school; import java.sql.*;private String name; class Student{ }
A. public static void main(String[] args){} B. public static void main(){} C. public static void main(String args[]){} D. public void static main(String[] args){}