Answer:
<u>Window.java</u>
- public class Window {
-     int width;
-     int height;
- 
-     public Window(int width, int height){
-         this.width = width;
-         this.height = height;
-     }
-     public int getWidth(){
-         return width;
-     }
-     public int getHeight(){
-         return height;
-     }
- 
-     public int getClientAreaHeight(){
-         return getHeight();
-     }
- }
<u>Main.java</u>
- public class Main {
-     public static void main (String [] args) {
-         Window win1 = new Window(12, 15);
-         System.out.println(win1.getClientAreaHeight());
-     }
- }
Explanation:
<u>Window.java</u>
There is a Window class with two int type attributes, width and height (Line 1 - 3). 
The constructor of this class will take two inputs, width and height and set these input to its attributes (Line 5 - 8). There are two methods getWidth and getHeight which will return the value of attributes width and height, respectively (Line 10 - 16). 
The required new method getClientAreaHeight is defined in line 18 -20. This method will call the getHeight method to return the height value of the window (Line 19). 
<u>Main.java</u>
We test the Window class by creating one Window instance and call the getClientAreaHeight method and print the return output (Line 1 -6).
We shall see 15 is printed.
 
        
             
        
        
        
Answer:
方法/步骤
右键单击以选择此计算机,然后有一个菜单来选择属性。
选择后,打开属性面板以找到我们的高级系统设置。
打开后,我们在系统设置下找到高级设置。
打开后,我们看到下面有一个环境变量选项。
打开后,我们在右下角看到一个删除选项。
单击删除到,在右下角后单击删除,然后单击确定的选项。 ...
本文未经授权摘自百度经验
 
        
             
        
        
        
The first one is d the second one is true the third one is false
        
             
        
        
        
<h2>Answer:</h2>
<u>The correct option is</u><u> (B) hang up and call back using the banks official phone number</u> 
<h2>Explanation:</h2>
There are a lot of cases where people pretend to call from the banks where the receivers have the account. The caller tries to take the information from the receiver and pretends to be the bank official. If there is any doubt then the receiver should hang up the call and call back the official number of the bank to confirm that whether somebody has called from the bank to get the information.
 
        
        
        
B.
it's literally common sense