java-input Basic class

Java beginners, must be difficult to enter data from the keyboard, use the following class input, you can
Easy to enter data from the keyboard:
Examples of using methods: String s=input.readstring (); Read into string
int I=input.readint (); Read integer
Below is the Java input and output basic class input class source code:
Import java.io.*;
Class Input
{static InputStreamReader in;
static BufferedReader reader;
Static
{in=new InputStreamReader (system.in);
Reader=new BufferedReader (in);
}


Static String readString ()
{String s= "";
Try
{S=reader.readline ();

}

catch (IOException E)
{System.out.println (e);
System.exit (0);
}
return s;
}

static Char Readchar ()
{char ch= ' a ';
Try
{
String s=readstring ();
Ch=s.charat (0);

}
catch (Exception e)
{SYSTEM.OUT.PRINTLN ("The data type entered is not correct, the program will exit");
System.exit (0);
}
return ch;
}


static int readInt ()
{String s=readstring ();
int i=0;
try{
I=integer.parseint (s);
}
catch (Exception e)
{SYSTEM.OUT.PRINTLN ("The data type entered is not correct, the program will exit");
System.exit (0);
}
return i;
}
Static Double readdouble ()
{String s=readstring ();
Double d=0.0;
Try
{d=double.parsedouble (s);
}
catch (Exception e)
{SYSTEM.OUT.PRINTLN ("The data type entered is not correct, the program will exit");
System.exit (0);
}
return D;
}
static float Readfloat ()
{
String s=readstring ();
float f=0.0f;
Try
{
F=float.parsefloat (s);
}
catch (Exception e)
{SYSTEM.OUT.PRINTLN ("The data type entered is not correct, the program will exit");
System.exit (0);
}
return F;
}
}

Use examples, enter 10 integers from the keyboard:
Class Inoutdata
{public static void main (String args[])
{int a[]=new int[10];
for (int i=0;i<10;i++)
{System.out.println ("Please enter a number");
A[i]=input.readint ();
}
for (int i=0;i<10;i++)
System.out.println ("a[" +i+ "]=" +a[i));
}
}