Java keyboard input in several ways, Big Love scanner

1 ImportJava.io.BufferedReader; 2 Importjava.io.IOException; 3 ImportJava.io.InputStreamReader; 4 ImportJava.util.Scanner; 5   6  Public classEntertest {7     8    Public Static voidMain (string[] args) {//Main Method9Chartest ();//calling the System.in methodTenReadtest ();//calling the Readtest method OneScannertest ();//calling the Scannertest method A   }  -   /**  - * System.in and System.out methods the * Disadvantage One: The method can get the characters entered from the keyboard, but only for one character of the acquisition - * Disadvantage two: Only the type of char is obtained. If you want to get int,float and other types of input, it is more troublesome.  -    */ -    Public Static voidchartest () { +     Try{  -System.out.print ("Enter a Char:");  +       Chari = (Char) System.in.read ();  ASystem.out.println ("Yout Enter Char is:" +i);  at     }  -     Catch(IOException e) { - e.printstacktrace (); -     }  -        -   }  in   /**  - * InputStreamReader and BufferedReader methods to * Advantages: Can get the keyboard input string + * Cons: How to get the type of int,float is still needed to convert -    */ the    Public Static voidreadtest () { *System.out.println ("Readtest, please Enter Data:");  $InputStreamReader is =NewInputStreamReader (system.in);//new construct InputStreamReader objectPanax NotoginsengBufferedReader br =NewBufferedReader (IS);//take the tectonic approach to the BufferedReader. -     Try{//there is a Ioexcepiton in this method that needs to be captured theString name =br.readline (); +System.out.println ("Readtest Output:" +name);  A     }  the     Catch(IOException e) { + e.printstacktrace (); -     }  $        $   }  -   /**  - * Methods in the Scanner class the * Advantage One: can get the keyboard input string - * Advantage Two: There is ready to obtain int,float and other types of data, very powerful, also very convenient;Wuyi    */ the    Public Static voidscannertest () { -Scanner sc =NewScanner (system.in); WuSystem.out.println ("Scannertest, please Enter Name:");  -String name = Sc.nextline ();//reading string input AboutSystem.out.println ("Scannertest, please Enter Age:");  $     intAge = Sc.nextint ();//Read integer input -System.out.println ("Scannertest, please Enter Salary:");  -     floatSalary = Sc.nextfloat ();//read float type input -SYSTEM.OUT.PRINTLN ("Your information is as below:");  ASystem.out.println ("Name:" + name + "\ n" + "Age:" +age + "\ n" + "Salary:" +salary);  +   }  the}

Java keyboard input in several ways, Big Love scanner