Wu Yuxiong - natural born JAVA development of learning: Variable Type

public  class Variable {
     static  int allClicks = 0;     // class variable 
 
    String STR = "Hello World";   // instance variables 
 
    public  void Method () { 
 
        int I = 0;   // local variable 
 
    } 
}

public  class the Test { 
    public  void pupAge () {
       int Age = 0 ; 
      Age = Age +. 7 ; 
      System.out.println ( "dog's age:" + Age); 
   } 
   
   public  static  void main (String [] args) { 
      the Test Test = new new the Test (); 
      test.pupAge (); 
   } 
}

public  class the Test { 
    public  void pupAge () {
       int Age; 
      Age = Age +. 7 ; 
      System.out.println ( "dog's age:" + Age); 
   } 
   
   public  static  void main (String [] args) { 
      the Test Test = new new the Test (); 
      test.pupAge (); 
   } 
}

Import the java.io. * ;
 public  class the Employee {
    // this sub-class instance variables visible 
   public String name;
    // private variable, only such visible 
   Private  Double the salary;
    // the name assigned to the constructor 
   public the Employee ( empName String) { 
      name = empName; 
   } 
   // set value of salary 
   public  void setSalary ( Double empSal) { 
      salary = empSal; 
   }   
   // print information 
   public  void with Printemp () { 
      System.out.println ("名字 : " + name );
      System.out.println("薪水 : " + salary);
   }
 
   public static void main(String[] args){
      Employee empOne = new Employee("RUNOOB");
      empOne.setSalary(1000);
      empOne.printEmp();
   }
}

Import java.io. * ; 
 
public  class the Employee {
     // salary is static private variable 
    Private  static  Double salary;
     // the DEPARTMENT is a constant 
    public  static  Final String the DEPARTMENT = "developers" ;
     public  static  void main (String [] args ) { 
    the salary = 10000 ; 
        System.out.println (the DEPARTMENT + "average wage:" + the salary); 
    } 
}