LAB1,LAB2, LAB3 U16/FNS/CSC/2061

labTwo_addressBreak.java

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+package practicalClass;
+
+import java.util.Scanner;
+//program to break file address into file path, file name and its extension
+//U16/FNS/CSC/2061
+public class labTwo_addressBreak {
+	public static void main(String[] args) {
+		Scanner file=new Scanner(System.in);
+		String path;
+		boolean check=false;
+		do {
+			System.out.println("Please enter File path: ");
+			path=file.nextLine();
+			if (path.contains("\\") && path.contains(".")) {
+				int index=path.lastIndexOf("\\");
+				int ext=path.lastIndexOf(".");
+				String fileName=path.substring(index+1, ext);
+				String filePath=path.substring(0, index);
+				String fileExt=path.substring(ext+1);
+				System.out.println("\nFor the full name: "+path);
+				System.out.println("Directory: "+filePath+" \nFile name: "+fileName+" \nExtension: "+fileExt);
+				check=true;
+			}
+			else {
+				System.out.println("Invalid Path ");
+			}
+		}while(!check);
+	}
+}

labTwo_emailBreak.java

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+package practicalClass;
+
+import java.util.Scanner;
+//Program to break inputed email into username and domain name
+//U16/FNS/CSC/2061
+public class labTwo_emailBreak {
+	public static void main(String[] args) {
+		Scanner userInput=new Scanner(System.in);
+		String testString,emailAddress;
+		boolean check;
+		do {
+			System.out.println("Please enter your email e.g: example@mail.com");
+			emailAddress=userInput.nextLine();
+			//String email_regex="[A-Z]+[a-zA-Z_]+@\b([a-zA-Z]+.) {2}\b?.[a-zA-Z]+";
+			String email_regex="^[_A-Za-z0-9-\\+]+(\\.[_A-Za-z0-9-]+)*@"+"[A-Za-z0-9-]+(\\.[A-Za-z0-9]+)*(\\.[A-Za-z]{2,})$";
+			testString=emailAddress;
+			check=testString.matches(email_regex);
+			if(!check) {
+				System.out.println("The email : \""+emailAddress+ "\" is Invalid\n");
+				//return;
+			}
+
+		}while(!check);
+
+			String[] parts= emailAddress.split("@");
+			System.out.println("\nFor the email address: "+emailAddress);
+			System.out.println("The user name is   : "+parts[0]+"\nThe domain name is : "+parts[1]);
+	}
+}
+

labTwo_mathFunction.java

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+package practicalClass;
+
+//program to carry out sin,cos,tan,abs,exp mathematical functions
+//U16/FNS/CSC/2045
+public class labTwo_mathFunction {
+	public static void main(String[] args) {
+		double k;
+		k=2/4*4%3;
+		//converting from degrees to radian
+		double cos=Math.cos(Math.toRadians(30)); 
+		double sin=Math.sin(Math.toRadians(30));
+		double tan=Math.tan(Math.toRadians(30));
+		//********* output *********** 
+		System.out.println("The value of cos 30: "+cos);
+		System.out.println("The value of exp(15): "+Math.exp(15));
+		System.out.println("The value of sin 30: "+sin);
+		System.out.println("The absolute value of k is "+Math.abs(k));
+		System.out.println("The value of tan 30: "+tan);
+	}
+
+}

labTwo_one.java

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+package practicalClass;
+
+//program to print miles, values of X,Y,Z and also log of a value
+// U16/FNS/CSC/2061
+public class labTwo_one {
+	public static void main(String[] args) {
+		//Lab2 question 1(a)
+		double miles=10.5;
+		miles++;
+		System.out.println("The current value of miles is now: "+miles);
+		//Lab2 question 1(b) 
+		double X,Y,Z,d=1.0;
+		int a=1;
+		X=d+ 43 % 5*(23*3%2);
+		Y=1.5 *3 +(++a);
+		Z=3 +(d*d)+4;
+		System.out.println("\n\nX ="+X+"\nY ="+Y+"\nZ ="+Z);
+
+		//Lab2 question 1(c)
+		double R,p=3.758;
+		R=Math.log(p); //R=log(3.758)
+		System.out.println("\n\nR=log(p) \nR ="+R); 
+	}
+
+}

patternDisplay.java

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+package practicalClass;
+
+//program to display a given pattern
+//U16/FNS/CSC/2061
+public class patternDisplay {
+	public static void main(String[] args) {
+		System.out.println("\n*\t*\n*\t*\n*\t*\n*\t*\n*\t*");
+		System.out.println("\n\n\n*\t*\n\n*\t*\t*\n\n*\t*\n\n*\t*\t*\n\n*\t*");
+		System.out.println("\n\n\n*\t*\n\n*\t*\t*\n\n*\t*\n\n*\t*\t*\n\n*\t*");
+		System.out.println("\n\n\n*\t\t*\n\n*\t\t*\n\n*\t\t*\n\n*\t\t*\n\n    * \t   *");
+		System.out.println("my name is MUAZU YAKUBU ALLAWA Matric number:U16/FNS/CSC/2061"
+	}
+
+}