diff --git a/IndexPoint.java b/IndexPoint.java
index 8b13789..19f5734 100644
--- a/IndexPoint.java
+++ b/IndexPoint.java
@@ -1 +1,51 @@
+//Sylvia Dwi Anggraini
+//1301154469
+//if-39-07
 
+package IndexPoint;
+import java.util.Scanner;
+
+public class IndexPoint{
+    public static void main(String[] args) {
+        String nama;
+        int nilai1, nilai2, nilai3;
+        double uas, uts, quis, nakhir;
+        
+        Scanner input = new Scanner(System.in);
+        System.out.println("Masukkan Nama : ");
+        nama = input.nextLine();
+        
+        System.out.println("Masukkan Nilai kuis : ");
+        nilai1 = input.nextInt();
+        
+        System.out.println("Masukkan Nilai uts : ");
+        nilai2 = input.nextInt();
+        
+        System.out.println("Masukkan Nilai UAS : ");
+        nilai3 = input.nextInt();
+        
+        quis = 0.25 * nilai1;
+        uts = 0.35 * nilai2;
+        uas = 0.4 * nilai3;
+        
+        nakhir = quis+uts+uas;
+        System.out.println("Jadi nilai akhirnya adalah : "+nakhir);
+        
+        if(nakhir>=85 && nakhir<=100){
+            System.out.println("Excellent");
+        }
+        else if(nakhir>=75 && nakhir<=84){
+            System.out.println("Very Good");
+        }
+        else if(nakhir>=65 && nakhir<=74){
+            System.out.println("Good");
+        }
+        else if(nakhir>=50 && nakhir<=64){
+            System.out.println("Accepted");
+        }
+        else if(nakhir>=49 && nakhir<=0){
+            System.out.println("Failed");
+        }
+    }
+}
+        
diff --git a/PrimeNumber.java b/PrimeNumber.java
index 8b13789..53d3230 100644
--- a/PrimeNumber.java
+++ b/PrimeNumber.java
@@ -1 +1,28 @@
+//Sylvia Dwi Anggraini
+//1301154469
+//if-39-07
 
+package primenumber;
+import java.util.Scanner;
+
+public class PrimeNumber{
+    public static void main(String[] args) {
+        Scanner input = new Scanner(System.in);
+        System.out.println("Masukkan angka : ");
+        int angka = input.nextInt();
+        int i;
+        boolean bilprima = true;
+        
+        for(i=2 ; i<angka ; i++){
+            if((angka % i) == 0){
+                bilprima = false;
+            }
+        }
+        if(bilprima)
+            System.out.println(angka+"adalah bilangan prima.");
+        
+        else
+            System.out.println(angka+"bukan bilangan prima");
+        
+    }
+}
diff --git a/TemperatureConvert.java b/TemperatureConvert.java
index e69de29..4b2a38f 100644
--- a/TemperatureConvert.java
+++ b/TemperatureConvert.java
@@ -0,0 +1,72 @@
+//Sylvia Dwi Anggraini
+//1301154469
+//if-39-07
+
+package TemperatureConvert;
+import java.util.Scanner;
+
+public class TemperatureConvert{
+    public static void main(String[] args) {
+        Scanner input = new Scanner(System.in);
+        double c, r, f, k, kelvin, reamur, fahrenheit, celcius;
+        int x=0;
+        while(x==0){
+        System.out.println("Temperature Convert");
+        System.out.println("1. Celcius");
+        System.out.println("2. Reamur");
+        System.out.println("3. Fahrenheit");
+        System.out.println("4. Kelvin");
+        System.out.print(" Pilih : ");
+        int pil = input.nextInt();
+        
+        switch(pil){
+            case 1 :
+                System.out.print("Masukkan Suhu Celcius : ");
+                c = input.nextDouble();
+                reamur     = 0.8*c;
+                fahrenheit = (1.8*c)+32;
+                kelvin = c+273;
+                System.out.println(reamur+"' reamur dan "+ fahrenheit+"' fahrenheit dan "+ kelvin+"' kelvin");
+                break;
+                
+            case 2 :
+                System.out.println("Masukkan Suhu Reamur : ");
+                r = input.nextDouble();
+                celcius = 1.25*r;
+                fahrenheit = (2.25*r)+32;
+                kelvin = (1.25*r)+273;
+                System.out.println(celcius+"' celcius dan "+ fahrenheit+"' fahrenheit"+ kelvin+"' kelvin");
+                break;
+                
+            case 3 : 
+                System.out.println("Masukkan Suhu Fahrenheit : ");
+                f = input.nextDouble();
+                celcius = 0.556*(f-32);
+                reamur = 0.444*(f-32);
+                kelvin = 0.556*(f-32)+273;
+                System.out.println(celcius+"' celcius dan "+ reamur+"' reamur"+ kelvin+"' kelvin");
+                break;   
+                
+            case 4 : 
+                System.out.println("Masukkan Suhu Kelvin : ");
+                k = input.nextDouble();
+                celcius = k-273;
+                reamur = 0.8*(k-273);
+                fahrenheit = 1.8*(k-273)+32;
+                System.out.println(celcius+"' celcius dan "+ reamur+"' reamur dan "+fahrenheit+"' fahrenheit.");
+                break;                               
+        }
+        
+        System.out.println("Apakah Ingin mencoba lagi? ");
+        System.out.println("1. Ya");
+        System.out.println("2. Tidak");
+        System.out.print("Pilih : ");
+        pil = input.nextInt();
+        if (pil==1){
+            System.out.println(pil);
+        }
+        else{
+            System.exit(0);
+        }
+    }}
+}
\ No newline at end of file