diff --git a/IndexPoint.java b/IndexPoint.java
index 8b13789..73a5388 100644
--- a/IndexPoint.java
+++ b/IndexPoint.java
@@ -1 +1,38 @@
+package javaapplication1;
 
+   import java.util.Scanner;
+public class gradenilai {
+     public static void main (String [] args){
+
+String nama , nim ;
+        final double n_tugas , n_uts , n_kuis , n_uas , n_akhir;
+        Scanner input = new Scanner (System.in);
+  System.out.println("Mencari grade");
+        System.out.print("Nilai kuis : ");
+        n_kuis = input.nextInt();
+        System.out.print("Nilai uts : ");
+        n_uts = input.nextInt();
+        System.out.print("Nilai uas : ");
+        n_uas = input.nextInt();
+        n_akhir = ( 0.25 * n_kuis + 0.35 * n_uts + 0.40 * n_uas);
+        
+        
+    
+     if (n_akhir >= 85 && n_akhir <=100){
+            System.out.println("Excellent");
+        }
+        else if (n_akhir > 75 && n_akhir < 85){
+            System.out.println("Very Good");
+        }
+        else if (n_akhir > 65 && n_akhir < 75){
+            System.out.println("Good");
+        }
+        else if (n_akhir > 50 && n_akhir < 65){
+            System.out.println("Accepted");
+        }
+        else {
+            System.out.println("Failed");
+        }
+     
+}
+}
diff --git a/PrimeNumber.java b/PrimeNumber.java
index 8b13789..55632af 100644
--- a/PrimeNumber.java
+++ b/PrimeNumber.java
@@ -1 +1,22 @@
+package javaapplication1;
 
+ import java.util.Scanner;
+ 
+public class Prima {
+    public static void main(String[] args) {
+    Scanner masukan=new Scanner(System.in);
+        System.out.println("masukkan bilangan :");
+        int x=masukan.nextInt();
+        int temp=0;
+        for (int i=1;i<x;i++){
+            if (x%i==0){
+                temp=temp+1;
+            }
+        }
+        if (temp==1){
+            System.out.println("bilangan prima");
+        }else{
+            System.out.println("Bukan Bilangan prima");
+        }
+    }
+}
diff --git a/TemperatureConvert.java b/TemperatureConvert.java
index e69de29..6149465 100644
--- a/TemperatureConvert.java
+++ b/TemperatureConvert.java
@@ -0,0 +1,24 @@
+package javaapplication1;
+
+import java.util.Scanner;
+public class JavaApplication1 {
+
+  
+    public static void main(String[] args) {
+       Scanner input = new Scanner (System.in);
+int c;
+float r,f,k;
+System.out.print(" Masukan suhu (Celcius): ");
+
+c = input.nextInt();
+r = 4f/5f*c;
+f = 9f/5f*c+32f;
+
+k = c +273;
+System.out.println("Hasil Konvert");
+System.out.println("reamur :" +r);
+System.out.println("fahrenhait :" + f);
+System.out.println("kelvin :" +k);
+    }
+    
+}
\ No newline at end of file