Java Input Setup

Choose from the following links, select all and Program > Run Selected to setup an Input library:

INPUT CLASS JJS IO SavitchIn KeyboardReader EasyReader
SMALL FONT JJS small IO small SavitchIn small KeyboardReader small EasyReader small
MEDIUM FONT JJS medium IO medium SavitchIn medium KeyboardReader medium EasyReader medium
LARGE FONT JJS large IO large SavitchIn large KeyboardReader large EasyReader large


After running any of the above Java input libraries, you can run the corresponding test program (found below).
Or, use the "standard" Java input (not simple). import java.io.*, and don't forget to throw an Exception 
/**
   @Author: K. Weiser
      Date: Aug 06, 2003
                    
            Import java.io.* for input
  */

import java.io.*;

public class Example {
	
  public static int strToInt(String s) {
      int result;
      Integer i;
      result = 0;

      try {
         i = new Integer(s);
         result = i.intValue();
      } catch (NumberFormatException e) {      
          System.out.println("BAD PARAMETER VALUE: ");
      }

      return result;
   }// end strToInt

   public int getInput() throws Exception{
      BufferedReader keybd = new BufferedReader(new InputStreamReader(System.in));
      String s = keybd.readLine();
      int result = strToInt (s);
      return result;
   }// end getInput

   public static void main(String args[]) throws Exception{
      int iNum;
      Example obj = new Example();
      System.out.print("Enter an integer: ");
      iNum = obj.getInput();
      System.out.println("The integer you entered is "+iNum);
   } // end main
 }// end Example

/*				RUN
    Enter an integer: 345
    The integer you entered is 345
*/

You can use the JJS class provided by PSVM, the makers of JJ Classic (online Java) and JJ2. 

Sample code:
String str1;
int iNum;
double dNum;
boolean bool;

JJS.startTimer();
str1 = JJS.inputString("Input a String to JJS.inputString()");
iNum = JJS.inputInt("Input an int to JJS.inputInt()");
dNum = JJS.inputDouble("Input an int to JJS.inputDouble()");
bool = JJS.inputBoolean("Input an int to JJS.inputBoolean()");
System.out.print("\n"+ str1+" "+" "+iNum+" "+dNum+" "+bool);
System.out.println(" took "+JJS.millisSinceStartTimer()+" milliseconds to enter.");

You can use the IO class that is modeled after the input shown in Advanced Placement Computer Science Study Guide by Fran Trees and Cay Horstmann. 

Sample code:
String str1, str2;
int iNum;
double dNum;
boolean bool;

System.out.print("Input a String to IO.readLine() ");
str1 = IO.readLine();
System.out.print("Input a String to IO.readWord() ");
str2 = IO.readWord();
System.out.print("Input an int to IO.readInt() ");
iNum = IO.readInt();
System.out.print("Input a double to IO.readDouble() ");
dNum = IO.readDouble();
System.out.print("Input a boolean to IO.readBoolean() ");
bool = IO.readBoolean();
System.out.println("\n"+ str1+" "+str2+" "+iNum+" "+dNum+" "+bool);
   
Sample Run:
Input a String to IO.readLine() dog
Input a String to IO.readWord() cat
Input an int to IO.readInt() 129
Input a double to IO.readDouble() -3.14159
Input a boolean to IO.readBoolean() tRUe

dog cat 129 -3.14159 true

You can use the SavitchIn class. 

Sample code:
String str;
int iNum;
double dNum;
boolean bool;

System.out.print("Input a String to SavitchIn.readLine() ");
str = SavitchIn.readLine();
System.out.print("Input an int to SavitchIn.readLineInt() ");
iNum = SavitchIn.readLineInt();
System.out.print("Input a double to SavitchIn.readLineDouble() ");
dNum = SavitchIn.readLineDouble();
System.out.print("Input a boolean to SavitchIn.readLineBoolean() ");
bool = SavitchIn.readLineBoolean();
System.out.println("\n"+ str+" "+iNum+" "+dNum+" "+bool);
   
Sample Run:
Input a String to SavitchIn.readLine() dog
Input an int to SavitchIn.readLineInt() 129
Input a double to SavitchIn.readLineDouble() -3.14159
Input a boolean to SavitchIn.readLineBoolean() tRUe

dog 129 -3.14159 true

You can use the KeyboardReader class. 

Sample code:
KeyboardReader kr = new KeyboardReader();
String str;
int iNum;
double dNum;

str = kr.readLine("Input a String to readLine() ");
iNum = kr.readInt("Input an int to readInt() ");
dNum = kr.readDouble("Input a double to readDouble() ");
System.out.println("\n"+ str+" "+iNum+" "+dNum);
   
Sample Run:
Input a String to readLine() dog
Input an int to readInt() 129
Input a double to readDouble() -3.14159

dog 129 -3.14159

You can use the EasyReader class. 

Sample code:
EasyReader er = new EasyReader();
String str;
int iNum;
double dNum;

System.out.print("Input a String to er.readLine() ");
str = er.readLine();
System.out.print("Input an int to er.readInt() ");
iNum = er.readInt();
System.out.print("Input a double to er.readDouble() ");
dNum = er.readDouble();
System.out.println("\n"+ str+" "+iNum+" "+dNum);
   
Sample Run:
Input a String to er.readLine() dog
Input an int to er.readInt() 129
Input a double to er.readDouble() -3.14159

dog 129 -3.14159