closed all the sc.scanners & added some files.

1. all sc.scanners closed from folder 1-7 (JFO_1_5_*.java)
2. addes decimal to binary convertion methods (2)

Author: Mukulkalsait

1.Basics/JB_4_Input.java

@@ -47,6 +47,7 @@ public static void main(String[] args) {
     // ..
     // nextFolat()
     // nextDouble()
+    sc.close();
   }
 }
 

1.Basics/JB_5_Sum2.java

@@ -19,5 +19,6 @@ public static void main(String[] args) {
     System.out.println(sum);
     System.out.println("the product of the two numvers is ");
     System.out.println(multyply);
+    sc.close();
   }
 }

1.Basics/JB_6_AreaofCircle.java

@@ -12,5 +12,6 @@ public static void main(String[] args) {
     float a = sc.nextFloat();
     float radius = 3.14f * a * a;
     System.out.println(radius);
+    sc.close();
   }
 }

1.Basics/JB_7_TypeCasting.java

@@ -3,7 +3,7 @@
  *   ==================================================================================================================================================
  *   JB_7_TypeCasting
  *  
- *   PERF:
+ *   GREEN:
  *   A.Type Conversion or( Widening or Implicit(unclear) converison...)
  *   B.Type Casting or (Narrowing or Explicit(clear) converison...)
  *
@@ -47,7 +47,7 @@ public static void main(String[] args) {
 
     // eg. 2
     Scanner sc = new Scanner(System.in);
-    int eg2_a = sc.nextFloat(); // this is giving error type mismatched type
+    float eg2_a = sc.nextFloat(); // this is giving error type mismatched type
     // cannot convert from float ot int...
 
     float eg2_b = sc.nextInt(); // whereas this will work without doubt cos flot is 8bit and we are saving int
@@ -90,5 +90,6 @@ public static void main(String[] args) {
     //
     //
     //
+    sc.close();
   }
 }

1.Basics/JB_8_2_ExpressionPromotion.java

@@ -13,11 +13,12 @@ public class JB_8_2_ExpressionPromotion {
 
   public static void main(String[] args) {
     byte a = 3;
-    byte b = a * 2;
+    int b = a * 2;
     // see the warning its becouse a is now premoted into Int.
 
     // so we use typecast here
     byte c = (byte) (a * 2);
     System.out.println(c);
+
   }
 }

2.Operators/JOP_1_Operators.java

@@ -1,5 +1,5 @@
 
-// TODO:
+// BLUE:
 // OPERANDS and OPERATOR
 // "a, b,and var is OPERANDS".
 // Symbols that tell compiler to perform certain operation. ( +,-,*,/ )
@@ -16,12 +16,12 @@
 public class JOP_1_Operators {
   public static void main(String[] args) {
 
-    // FIX:
+    // BLUE:
     // 1 Arithmetic operators:
     // TEST:
     // A. Unary operators
     // only one operand eg. a++ , b-- , ++c, --d;
-    // FIX:[here a += 10 and a-= 12; are considerd as assigment operators so chechk
+    // WARN:[here a += 10 and a-= 12; are considerd as assigment operators so chechk
     // there.]
     // TEST:
     // B. Binary operators:
@@ -38,7 +38,7 @@ public static void main(String[] args) {
 
     // FIX:
     // 2 Relational Operator:
-    // TEST:
+    // DIV:
     // shows relation ---
     // 1. ==
     // 2. !=
@@ -63,7 +63,7 @@ public static void main(String[] args) {
     System.out.println("A >= B is " + (A >= B));
     System.out.println("A <= B is " + (A <= B));
 
-    // FIX:
+    // TAG:
     // Assignment operators
     // 1. =
     // 2. +=

3.ConditionalSteatments/JCS_1_IfEsle.java

@@ -21,6 +21,7 @@ public static void main(String[] args) {
     // FIX:
     // here if we use only if instead of else if, in cases where age is "18" both
     // conditions might be applied ( if we use age <= 18 in second case.).
+    sc.close();
   }
 
 }

3.ConditionalSteatments/JCS_2_IfElse.java

@@ -17,5 +17,6 @@ public static void main(String[] args) {
     } else {
       System.out.println(" b is greater !!!");
     }
+    sc.close();
   }
 }

3.ConditionalSteatments/JCS_3_IfElse.java

@@ -14,6 +14,6 @@ public static void main(String[] args) {
     } else {
       System.out.println("The value of a " + a + " is Odd Value.");
     }
+    sc.close();
   }
-
 }

3.ConditionalSteatments/JCS_4_ifelseTax.java

@@ -21,6 +21,6 @@ public static void main(String[] args) {
     int grossIncome = income - tax;
     System.out.println("accouding to your income '" + income + "' your income tax is = " + tax);
     System.out.println("hence your Real income is " + grossIncome);
-
+    sc.close();
   }
 }

3.ConditionalSteatments/JCS_5_ifelse_largeNum.java

@@ -37,5 +37,6 @@ public static void main(String[] args) {
     } else {
       System.out.println("the 3rd input " + a3 + " is greatest of all !!!");
     }
+    sc.close();
   }
 }

3.ConditionalSteatments/JCS_6_terneryOperator.java

@@ -33,5 +33,6 @@ public static void main(String[] args) {
 
     System.out.println((val1 >= val2) ? "Congruats You are pass !!!" : "Your Score is low, Better Luck Next Time.");
     // here we added turnery opeartor insdide the println() function.
+    sc.close();
   }
 }

3.ConditionalSteatments/JCS_7_SwitchCalculator.java

@@ -38,5 +38,6 @@ public static void main(String[] args) {
         System.out.println("inValid Operator is given please give only +,-,*,/,%");
         break;
     }
+    sc.close();
   }
 }

3.ConditionalSteatments/JCS_Assi1.java

@@ -15,5 +15,6 @@ public static void main(String[] args) {
     String posNigitie = (num > 0) ? "Positive" : "Nigitive";
 
     System.out.println("The Number " + num + " is " + evenOdd + " && " + posNigitie + " Number.");
+    sc.close();
   }
 }

3.ConditionalSteatments/JCS_Assi2.java

@@ -36,5 +36,6 @@ public static void main(String[] args) {
         System.out.println("Please enter only 1 to 7 days according day.");
         break;
     }
+    sc.close();
   }
 }

3.ConditionalSteatments/JCS_Assi3.java

@@ -22,5 +22,6 @@ public static void main(String[] args) {
     }
     System.out.println("With this the loop is ended.");
 
+    sc.close();
   }
 }

3.ConditionalSteatments/JCS_Assi4.java

@@ -21,5 +21,6 @@ public static void main(String[] args) {
     } else {
       System.err.println("ERROR: Please make sure Initial value is smaller than Final Value. !!!");
     }
+    sc.close();
   }
 }

3.ConditionalSteatments/JCS_Assi4_2.java

@@ -18,5 +18,6 @@ public static void main(String[] args) {
     float sum = (initVal + finVal) * (finVal - initVal) / 2;
 
     System.out.println(sum);
+    sc.close();
   }
 }

4.Loops/JL_1_while.java

@@ -13,5 +13,6 @@ public static void main(String[] args) {
       x++;
     }
     System.out.println("End.");
+    sc.close();
   }
 }

4.Loops/JL_2_forLoop.java

@@ -11,5 +11,6 @@ public static void main(String[] args) {
       System.out.println("I dont know wahat is this !!! " + for1);
     }
     System.out.println("End.");
+    sc.close();
   }
 }

4.Loops/JL_3_sumOfN.java

@@ -10,5 +10,6 @@ public static void main(String[] args) {
       sum = sum + i;
     }
     System.out.println("The total = " + sum);
+    sc.close();
   }
 }

4.Loops/JL_4_reverseNum.java

@@ -15,5 +15,6 @@ public static void main(String[] args) {
       n = n / 10;
     }
     System.out.println("The reverse of " + orignal + " is " + rev);
+    sc.close();
   }
 }

4.Loops/JL_5_doWhileBREAK.java

@@ -12,5 +12,6 @@ public static void main(String[] args) {
       }
       System.out.println(num);
     } while (true);
+    sc.close();
   }
 }

4.Loops/JL_6_doWhileContinue.java

@@ -30,6 +30,6 @@ public static void main(String[] args) {
         i++;
       }
     } while (i <= a);
-
+    sc.close();
   }
 }

5.BasicDeep/JBD_1_primeNum.java

@@ -9,6 +9,7 @@ public static void main(String[] args) {
     Boolean prime = true;
     if (checkNum == 2) {
       System.out.println("The number " + checkNum + " is Prime number!!!");
+      sc.close();
       return;
     } else {
       for (int i = 2; i <= Math.sqrt(checkNum); i++) {
@@ -26,6 +27,7 @@ public static void main(String[] args) {
         System.out.println("The number " + checkNum + " is NOT a Prime number!!!");
       }
     }
+    sc.close();
   }
 }
 

5.BasicDeep/JBD_2_evenOddSepretSum.java

@@ -24,5 +24,6 @@ public static void main(String[] args) {
     } while (repet == 1);
 
     System.out.println(" The total of all Evens is: " + Even + " and The total of all ODDS is: " + Odd);
+    sc.close();
   }
 }

5.BasicDeep/JL_Pat_1_lines.java

@@ -9,5 +9,6 @@ public static void main(String[] args) {
     for (int i = 0; i < line; i++) {
       System.out.println("****");
     }
+    sc.close();
   }
 }

5.BasicDeep/JL_Pat_2_stars.java

@@ -17,6 +17,6 @@ public static void main(String[] args) {
       start++; // PERF: this must be in the while loop other wise it will be incrementino
                // everytime in for loop and loop will stop very soon.
     }
-    ;
+    sc.close();
   }
 }

5.BasicDeep/JL_Pat_3_revPat.java

@@ -15,5 +15,6 @@ public static void main(String[] args) {
       System.out.println(" ");
     }
 
+    sc.close();
   }
 }

5.BasicDeep/JL_Pat_4_charPat.java

@@ -16,6 +16,6 @@ public static void main(String[] args) {
       }
       System.out.println();
     }
-
+    sc.close();
   }
 }

5.BasicDeep/JL_Pat_5_numPirimid.java

@@ -16,6 +16,6 @@ public static void main(String[] args) {
       }
       System.out.println();
     }
-
+    sc.close();
   }
 }

6.Function_Methods/JFM_1_funBasic.java

@@ -46,5 +46,6 @@ public static void main(String[] args) {
     // in INT return type we have to use "return <name>;" stetment so that it can
     // return certain value.
     // wihtout that it will through error.
+    sc.close();
   }
 }

6.Function_Methods/JFM_2_funBasic.java

@@ -19,6 +19,6 @@ public static void main(String[] args) {
 
     int multi = multiply(a, b);
     System.out.println(multi);
-
+    sc.close();
   }
 }

6.Function_Methods/JFM_3_valSWAP.java

@@ -34,5 +34,6 @@ public static void main(String[] args) {
     System.out.println("value of A and B respectively in MAIN function " + a + " " + b);
     System.out.println(
         "The resualt shows how jawa uses 'Pass by value' to copy the variables in other method/function/stack");
+    sc.close();
   }
 }

6.Function_Methods/JFM_4_factorial.java

@@ -20,5 +20,6 @@ public static void main(String[] args) {
 
     int fact = factorial(a);
     System.out.println("The factorial of " + a + " is " + fact);
+    sc.close();
   }
 }

6.Function_Methods/JFM_5_binomialCofiecient.java

@@ -36,6 +36,7 @@ public static void main(String[] args) {
 
     int binoCofi = binomialCofient(n, r);
     System.out.println("the Binomial Cofient of " + n + " and " + r + " is " + binoCofi);
+    sc.close();
 
   }
 }

7.Function_Overloading/'

@@ -0,0 +1,20 @@
+import java.util.*;
+
+public class JL_4_reverseNum {
+  public static void main(String[] args) {
+
+    Scanner sc = new Scanner(System.in);
+    System.out.println("Please input the number:");
+    int n = sc.nextInt();
+    int orignal = n;
+    int rev = 0;
+
+    while (n > 0) {
+      int x = n % 10;
+      rev = (rev * 10) + x;
+      n = n / 10;
+    }
+    System.out.println("The reverse of " + orignal + " is " + rev);
+    sc.close();
+  }
+}

7.Function_Overloading/JFO_1_1_A_ParamNum.java

@@ -36,13 +36,16 @@ public static int inputAdder() {
         System.out.println("Intput d: (max num = 4)");
         int d = sc.nextInt();
         int res = multiply(a, b, c, d);
+        sc.close();
         return res;
       } else {
         int res = multiply(a, b, c);
+        sc.close();
         return res;
       }
     } else {
       int res = multiply(a, b);
+      sc.close();
       return res;
     }
   }

7.Function_Overloading/JFO_1_2_PrimeCheck.java

@@ -39,5 +39,7 @@ public static void main(String[] args) {
       }
       startNum++;
     } while (startNum <= endNum);
+
+    sc.close();
   }
 }