add scanner

Author: ashishyadav2

Java2/Exceptions/CustomExceptions.java

@@ -1,21 +1,19 @@
 package Exceptions;
 
 class MyException extends Exception {
-    public MyException(String message){
-        super(message);
+    public MyException(String msg){
+        super(msg);
     }
 }
 public class CustomExceptions {
     public static void main(String[] args) {
-        int a = 15;
-        try{
-            if( a>10) {
-                throw new MyException("something went wrong");
-            }
+        int a = 5;
+        try {
+            throw new MyException("cannot divide by zero");
         }
         catch (MyException e){
             e.printStackTrace();
-            System.out.println(e.getMessage());
+            System.out.println("Exception occurred");
         }
     }
 }

Java2/Temp/pra2/InputPractice.java

@@ -0,0 +1,70 @@
+package Temp.pra2;
+
+import java.io.File;
+import java.io.FileNotFoundException;
+import java.util.Scanner;
+class TClass {
+    int n;
+    int id;
+    String name;
+    int iter;
+    String s;
+    int p;
+    int q;
+    String r;
+    int s2;
+
+    @Override
+    public String toString() {
+        return "TClass{" +
+                "n=" + n +
+                ", id=" + id +
+                ", name='" + name + '\'' +
+                ", iter=" + iter +
+                ", s='" + s + '\'' +
+                ", p=" + p +
+                ", q=" + q +
+                ", r='" + r + '\'' +
+                ", s=" + s +
+                '}';
+    }
+}
+public class InputPractice {
+    public static void main(String[] args) {
+        File fileObj = new File("C:\\Users\\ashis\\IdeaProjects\\JavaLessons\\src\\Temp\\pra2\\input.txt");
+        Scanner sc = null;
+        try {
+            sc = new Scanner(fileObj);
+            int n = sc.nextInt();
+            TClass[] arr = new TClass[n];
+            for(int i=0;i<n;i++){
+                double id = sc.nextDouble();
+                sc.nextLine();
+                String name = sc.nextLine();
+                int iter = sc.nextInt();
+                String s = "";
+                int p = 0;
+                for(int j=0;j<iter;j++) {
+                    sc.nextLine();
+                    s = sc.nextLine();
+                    p = sc.nextInt();
+                    System.out.println(s+ " "+p);
+                }
+                arr[i] = new TClass();
+                System.out.println(id+" "+name+" "+iter);
+            }
+            int q = sc.nextInt();
+            sc.nextLine();
+            String r = sc.nextLine();
+            int s2 = sc.nextInt();
+            System.out.printf("%d %s %d",q,r,s2);
+        }
+        catch (FileNotFoundException e){
+            System.out.println("file not found");
+        }
+        finally {
+            assert sc != null;
+            sc.close();
+        }
+    }
+}

Java2/Temp/pra2/input.txt

@@ -0,0 +1,26 @@
+2
+2001.0
+hello
+4
+world
+5000
+alpha
+6000
+world
+5000
+alpha
+6000
+1987.0
+hello
+4
+world
+5000
+alpha
+6000
+world
+5000
+alpha
+6000
+2002
+hello
+2003