All tasks

src/test/java/javaTraining/module1/ArrayDeclarationActivity.java

@@ -1,35 +1,38 @@
 package javaTraining.module1;
 
+import java.util.Random;
+
 public class ArrayDeclarationActivity {
 
 	public static void main(String[] args) {
 
 		// TODO #1: Declare array of integers and Strings (without initializiation)
-
+		int[] mas1;
+		String[] mas2;
 		// END TODO #1
 
 		// TODO #2: Initialize/assign previously declared arrays with size of 10
+		mas1 =new int[10];
+		mas2 =new String[10];
 
 		// END TODO #2
-
-
 		// TODO #3: assign any String for 1st array element
-
+		mas2[1] = "eeeee";
+		System.out.println(mas2[1]);
 		// END TODO #3
-
 		// TODO #4: declare, initiliaze and assign 5 elements to an array in another way in one line (with curly braces)
 		// both - String and integer arrays
+		for(int i=1 ; i<=5;i++){mas1[i]= new Random().nextInt(10);
+			System.out.println(mas1[i]);}
 
 		// END TODO #4
-
-
 		// TODO #5: access 3rd element from integer array and output it
-
+		System.out.println(mas1[3]);
 		// END TODO #5
 
 
 		// TODO #6: access 1st element from String array
-
+		System.out.println(mas2[1]);
 		// END TODO #6
 	}
 }

src/test/java/javaTraining/module1/CastingActivity.java

@@ -10,17 +10,23 @@ public static void main(String arg[]) {
 		int
 		double
 		*/
-
+		byte buy = 23;
+		short sh = 100;
+		int in = 5;
+        double dub = 2.0;
         // END TODO #1
 
 
         // TODO #2: Write a code which will show example of Implicit Casting for previously declared variables
+        in=in*5;
+        System.out.println(in);
 
         // END TODO #2
 
 
-        // TODO #2: Write a code which will show example of Explicit Casting for previously declared variables
-
-        // END TODO #2
+        // TODO #3: Write a code which will show example of Explicit Casting for previously declared variables
+        dub = dub + 5;
+        System.out.println(dub);
+        // END TODO #3
     }
 }

src/test/java/javaTraining/module1/CommandLineParametersActivity.java

@@ -3,8 +3,9 @@
 
 
 public class CommandLineParametersActivity {
-
 	public static void main(String[] args) {
+		int a= 5;
+		System.out.println(a);
 		//	TODO - output first parameter from comand line
 	}
 }

src/test/java/javaTraining/module1/DataTypesActivity.java

@@ -17,11 +17,29 @@ public static void main(String[] args) {
 		boolean
 		*/
 
+		byte v1 = 1;
+		short v2 = 2;
+		int v3 = 3;
+		long v4 = 4;
+		float v5 = 5;
+		double v6 = 6.0;
+		char v7 = 'E';
+		boolean v8 = true;
+
 		// END TODO #1
 
 
 		// TODO #2: initialize previously declared variables with some values
 
+		v1 = 2;
+		v2 = 3;
+		v3 = 4;
+		v4 = 5;
+		v5 = 6;
+		v6 = 7.0;
+		v7 = 'A';
+		v8 = false;
+
 		// END TODO #2
 	}
 

src/test/java/javaTraining/module1/DecisionActivity.java

@@ -15,6 +15,36 @@ public static void main(String[] args) {
 		* using IF statement
 		* which will output "The value of theNumber is <random number>"
 		*/
+		if(theNumber == 0){
+			System.out.println("The value of theNumber is "+ theNumber);
+		}else
+		if(theNumber == 1){
+			System.out.println("The value of theNumber is "+ theNumber);
+		}else
+		if(theNumber == 2){
+			System.out.println("The value of theNumber is "+ theNumber);
+		}else
+		if(theNumber == 3){
+			System.out.println("The value of theNumber is "+ theNumber);
+		}else
+		if(theNumber == 4){
+			System.out.println("The value of theNumber is "+ theNumber);
+		}else
+		if(theNumber == 5){
+			System.out.println("The value of theNumber is "+ theNumber);
+		}else
+		if(theNumber == 6){
+			System.out.println("The value of theNumber is "+ theNumber);
+		}else
+		if(theNumber == 7){
+			System.out.println("The value of theNumber is "+ theNumber);
+		}else
+		if(theNumber == 8){
+			System.out.println("The value of theNumber is "+ theNumber);
+		}else
+		if(theNumber == 9){
+			System.out.println("The value of theNumber is "+ theNumber);
+		}
 
 		// END TODO #1
 
@@ -24,6 +54,24 @@ public static void main(String[] args) {
 		* which will output "The value of theNumber is <random number>"
 		* Print "The number is not a valid choice" if theNumber value is not in the range of 0...9
 		*/
+		int ran=10;
+		switch (ran) {
+			case 0: System.out.println("The value of theNumber is "+ theNumber);
+			case 1: System.out.println("The value of theNumber is "+ theNumber);
+			case 2: System.out.println("The value of theNumber is "+ theNumber);
+			case 3: System.out.println("The value of theNumber is "+ theNumber);
+			case 4: System.out.println("The value of theNumber is "+ theNumber);
+			case 5: System.out.println("The value of theNumber is "+ theNumber);
+			case 6: System.out.println("The value of theNumber is "+ theNumber);
+			case 7: System.out.println("The value of theNumber is "+ theNumber);
+			case 8: System.out.println("The value of theNumber is "+ theNumber);
+			case 9: System.out.println("The value of theNumber is "+ theNumber);
+			default:
+				System.out.println("The number is not a valid choice");
+				break;
+
+		}
+
 
 		// END TODO #2
 

src/test/java/javaTraining/module1/ForLoopActivity.java

@@ -5,6 +5,9 @@ public class ForLoopActivity {
 	public static void main(String[] args) {
 
 		// TODO #1: print numbers from 1 to 10 by using FOR loop
+		for (int i=1  ;i<=10; i++){
+			System.out.println(i);
+		}
 
 		// END TODO #1
 
@@ -17,7 +20,12 @@ public static void main(String[] args) {
 				* * * * * * * * * *
 		     Hint - use nested FOR loop
 		     */
-
+		for (int i = 1; i<=5; i++){
+			for (int a=1  ;a<=10; a++){
+				System.out.print(a+" ");
+			}
+			System.out.println();
+		}
 		// END TODO #2
 	}
 }

src/test/java/javaTraining/module1/MethodActivity.java

@@ -4,31 +4,46 @@ public class MethodActivity {
 
 	// TODO #1: write a method which will output "Hello!"
 
+	public static void getPub(){
+		System.out.println("Hello!");
+	}
+
 	// END TODO #1
 
 	// TODO #2: write a static method which will output "Hello!"
+	public static void pub2(){
+		System.out.println("Hello!");
+	}
 
 	// END TODO #2
 
 	// TODO #3: Write method which returns a sum of 2 numbers. 2 numbers should be passed as parameters.
 
+	public int getSumm(int a, int b){
+		int sum;
+		sum = a+b;
+		return sum;
+	}
 	// END TODO #3
 
 
 	public static void main(String arg[]){
 
 		// TODO #4: Invoke a method from TODO #1. HINT - main() method is a STATIC method
-
+		MethodActivity met = new MethodActivity();
+		met.getPub();
 		// END TODO #4
 
 
 		// TODO #5: Invoke a method from TODO #2. (Try to invoke it 2 ways possible)
-
+		pub2();
 		// END TODO #5
 
 
 		// TODO #6: Invoke a method from 3rd 'TODO'. Assign return value of this method to a variable and output it
-
+		int a =2;
+		int b =5;
+		System.out.println(met.getSumm(a ,b));
 		// END TODO #6
 	}
 }

src/test/java/javaTraining/module1/OperatorActivity.java

@@ -10,16 +10,37 @@ public static void main(String[] args) {
 
         //TODO - assign the sum of x and y to z variable
 
+        z = x+y;
+        System.out.println("X and Y summ "+z);
+
         //TODO - write z=z+1 in a shorter way (2 ways possible)
+        z++;
+        System.out.println(z);
+        ++z;
+        System.out.println(z);
 
         //TODO - Increment x by 1 and the assign it to z
-
+        z=x++;
+        System.out.println(z);
         //TODO - Assign x variable to z variable and the increment x by 1. NOTE - should be done as one expression
-
+        z=x++;
+        System.out.println(z);
         //TODO - show example of RELATIONAL operator
 
+        if(z==2){
+            System.out.println("ir vienads");
+        }else{
+            System.out.println("nav vienads");
+        }
+
         //TODO - show example of LOGICAL operator
 
+        if(z ==1 && x==2){
+            System.out.println("nav vienadi");
+        }
+
         //TODO - show example of ()? ():() operator
+        System.out.println((z>x) ? z:x);
+
     }
 }

src/test/java/javaTraining/module1/VariableActivity.java

@@ -8,11 +8,33 @@ public class VariableActivity {
 		3. Local variables with primitive and object variables
 	*/
 
+
+	//Instance
+    public int a1=1;
+
+
+	//Class
+    public static int a2=2;
+
+	//Local
+    public void getVariable3(int a3){
+        System.out.println(a3);
+    }
 	// END TODO #1
 
 
 	// TODO #2: initialize previously declared instance variable with some value in one method and output it in other method
 	// Is it possible to have access to local variable from multiple methods?
 
+    public static void main(String[] args){
+        VariableActivity va = new VariableActivity();
+        System.out.println(va.a1);
+
+        System.out.println(a2);
+
+        va.getVariable3(3);
+    }
+
+
 	// END TODO #2
 }

src/test/java/javaTraining/module1/WhileLoopActivity.java

@@ -5,7 +5,11 @@ public class WhileLoopActivity {
 	public static void main(String[] args) {
 
 		// TODO #1: print numbers from 1 to 10 by using WHILE loop
-
+		int i = 1;
+		while(i<=10 ){
+			System.out.println(i);
+			i++;
+		}
 		// END TODO #1
 	}
 }