Add files via upload

Author: mngugi

greetings.java

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+public class Greetings{
+    public static void main(String[] args) {
+    System.out.println("Greetings in Your Language:");
+    
+    }
+
+
+}

hello.java

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+
+
+public class Timeline {
+  public static void main(String[] args) {
+    System.out.println("Hello Java!");
+    
+    System.out.println("You were born in 1995");
+
+    /**Sun Microsystems announced the release of Java in 1995 */
+    
+    System.out.println("You were created by James Gosling");
+    
+		/**James Gosling is a Canadian engineer who 
+		created Java while working at Sun Microsystems. 
+		His favorite number is the square root of 2! */
+    
+    System.out.println("You are a fun language!");
+  }
+} 

if_statement.java

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+import java.util.Scanner;
+public class Main{
+	public static void main(String[]  args) {
+	Scanner input = new Scanner(System.in);
+	
+	System.out.println("Enter sum total: " );
+	int sum = input.nextInt();
+	
+	
+	if (sum > 250){
+		System.out.println("Total sum is  " +sum+ " Greater than 249");
+		
+	}else if (sum < 250){
+	 	System.out.println("Total of  " +sum+ " is less than 250");
+	 		 	
+	 	}else {
+	 	System.out.println("Exact value is " +sum);
+	 	
+	 	}
+	 	
+	
+	}
+
+
+}

java1.java

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+public class Main{
+   public static void main(String[] args) {
+    for (int i = 0; i < 10; i++)
+     System.out.println(i);
+     
+     String[] fruits = {"Apple","Banana", "Orange"};
+     for (String i : fruits)
+     System.out.println(fruits);
+    
+   
+   }
+}

mapHash.java

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+import java.util.HashMap;
+
+public class Main {
+  public static void main(String[] args) {
+    HashMap<String, String> capitalCities = new HashMap<String, String>();
+    capitalCities.put("England", "London");
+    capitalCities.put("Germany", "Berlin");
+    capitalCities.put("Norway", "Oslo");
+    capitalCities.put("USA", "Washington DC");
+    System.out.println(capitalCities); 
+  }
+}
+

method1.java

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+public class Main{
+   static void method1(String Fruit_name){
+   System.out.println(Fruit_name + " Orange");
+        
+   }
+   
+   public static void  main(String[] args){
+   
+      method1("which fruit has a Color is yellow or green?" );
+      
+   
+   }
+
+}

method2.java

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+public class Main{
+   static void compare(int num){
+   if (num <= 32){
+   System.out.println("Wrong Number");
+   
+   } else {
+   System.out.println("Re-enter number ");
+   
+   }
+   
+   }
+   
+public static void main(String[] args){
+   compare(22);
+}
+}

method3.java

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+public class Main {
+static int method3(int x, int y){
+   return x / y ; 
+   
+}
+
+static double method3_one(double x, double y){
+    return x*y ;
+
+}
+
+public static void main(String[] args){
+   int numA = method3(100, 20);
+   double numB = method3_one(10.2, 2.20);
+   System.out.println("Math func int =  " + numA);
+   System.out.println("Math func double =  " + numB);
+}
+
+}

method4.java

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+public class Main{
+   public static void main(String[] args){
+      int result = sum(5);
+      System.out.println(result);
+   
+   }
+   
+   public static int sum(int i){
+      if (i > 0) {
+        return i + sum(i -1);
+      
+      } else {
+      
+       return 0;
+      }
+   
+   }
+
+}

method_overload.java

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+public class Main {
+    static int plusMethodInt(int x, int y) {
+      return x + y;
+    }
+    
+    static double plusMethodDouble(double x, double y) {
+      return x + y;
+    }
+    
+public static void main(String[] args) {
+      int myNum1 = plusMethodInt(8, 5);
+      double myNum2 = plusMethodDouble(4.3, 6.26);
+      System.out.println("int: " + myNum1);
+      System.out.println("double: " + myNum2);
+}
+
+}
+  

method_overload2.java

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+public class Main {
+static int addMethod(int numA , int numB)
+{
+return numA + numB;
+
+}
+static double addDouble(double numA , double numB)
+{
+return numA + numB;
+
+}
+
+public static void main(String[] args){
+int num_intAdd_Answer = addMethod(4,5);
+double num_doubleAdd_Answer = addDouble(3.12,6.12);
+System.out.println("int answer:" + num_intAdd_Answer);
+System.out.println("double answer: " + num_doubleAdd_Answer);
+
+}
+
+
+}

methods.java

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+public class Main{
+   static void method_one(){
+   System.out.println("Learn English, German, Swahili and French");
+   
+   }
+   
+   public static void main(String[] args){
+      method_one();
+      method_one();
+      method_one();
+      method_one();
+      method_one();
+   
+   }
+
+}