Digitaltanmay - Start Learning Now



LAB FILEFIBONACCICode:-import java.util.Scanner;class fab{ public static void main(String args[]) { Scanner sc=new Scanner(System.in); int a,b,c,n; a=0; b=1; System.out.println("enter the value of n:"); n=sc.nextInt(); for(int i=0;i<n;i++) { System.out.println(a); c=a+b; a=b; b=c; } }}OutputCalculatorCode:-import java.util.Scanner;class cal{ public static void main(String args[]) { int n; float a,b; Scanner sc=new Scanner(System.in); System.out.println("Enter your choice"); System.out.println("\n1)add\n2)sub\n3)multi\n4)div"); n=sc.nextInt(); if(n==1) { System.out.println("Enter the value of a :"); a=sc.nextFloat(); System.out.println("Enter the value of b :"); b=sc.nextInt(); System.out.println(a+b); } if(n==2) { System.out.println("Enter the value of a :"); a=sc.nextFloat(); System.out.println("Enter the value of b :"); b=sc.nextInt(); System.out.println(a-b); } if(n==3) { System.out.println("Enter the value of a :"); a=sc.nextFloat(); System.out.println("Enter the value of b :"); b=sc.nextInt(); System.out.println(a*b); } if(n==4) { System.out.println("Enter the value of a :"); a=sc.nextFloat(); System.out.println("Enter the value of b :"); b=sc.nextInt(); System.out.println(a/b); } }}Output3)Single level inheritance example ( parent and child class)Code :-class A{ void m1() { System.out.println("hello"); }}class B extends A{ void m2() { System.out.println("world"); }}class inh{ public static void main(String args[]) { B obj=new B(); obj.m1(); obj.m2(); }}Output :-4) Inheritance of college and studentCode :-import java.util.Scanner;class university{ String col_name,col_add; Scanner D=new Scanner(System.in); void get_university() { System.out.println("enter the college name"); col_name=D.nextLine(); System.out.println("enter the college address"); col_add=D.nextLine(); System.out.println(col_name); System.out.println(col_add); }}class student extends university{ String std_name,std_id; Scanner D=new Scanner(System.in); void get_student() { System.out.println("enter name of student name"); std_name=D.nextLine(); System.out.println("enter email id of student"); std_id=D.nextLine(); System.out.println(std_name); System.out.println(std_id); }}class inheritance{ public static void main(String args[]) { student a=new student(); a.get_student(); a.get_university(); }}Output :-5)Even and oddCode :- import java.util.Scanner;class A{ public static void main(String args[]) { Scanner sc=new Scanner(System.in); System.out.println("enter a number :"); int a=sc.nextInt(); if(a%2==0) { System.out.println("enen number"); } else { System.out.println("odd number"); } } }Output :-6)FactorialCode :-class fact{ public static void main(String args[]) { int fact=1,i; for(i=1;i<=3;i++) { fact=fact*i; } System.out.println(fact); }}Output :-7)Method overloadingCode:-import java.util.Scanner;class overloading{ Scanner D=new Scanner(System.in); void m1(int a) { System.out.println("enter the value of a"); a=D.nextInt(); System.out.println(a); } void m1(int x,float y) { System.out.println("enter the value of x"); x=D.nextInt(); System.out.println("enter the value of y"); y=D.nextInt(); System.out.println(x); System.out.println(y); } public static void main(String args[]) { overloading s=new overloading(); s.m1(2); s.m1(3,7); }}Output :-8) Method overridingCode :-import java.util.Scanner;class A{ int a,b,c; Scanner D=new Scanner(System.in); void m1() { System.out.println("enter the value of a"); a=D.nextInt(); System.out.println("enter the value of b"); b=D.nextInt(); c=a+b; System.out.println(c); }}class B extends A{ int x,y,z; Scanner D=new Scanner(System.in); void m1() { System.out.println("enter the value of x"); x=D.nextInt(); System.out.println("enter the value of y"); y=D.nextInt(); z=x*y; System.out.println(z); }}class overriding{ public static void main(String arg[]) { B s=new B(); s.m1(); }}Output :-9)Pattern 1class Pattern{public static void main(String []args){for(int i=0;i<5;i++){for(int j=0;j<i+1;j++){System.out.print("*");}System.out.println();}}}10)Pattern 2class Pattern2{ public static void main(String[] args){int n =5;int space = n - 1; for (int i = 0; i < n; i++) { for (int j = 0; j < space; j++) {System.out.print(" "); } for (int j = 0; j <= i; j++) { if(i%2==0){System.out.print("* ");}} System.out.print("\n"); space--; } space = 0; for (int i = n-1; i > 0; i--) { for (int j = 0; j < space; j++) { System.out.print(" "); } for (int j = 0; j < i; j++) { if(i%2!=0){System.out.print(" *"); }} System.out.print("\n"); space++; } } }11)Pattern 3class Pattern4{public static void main(String []args){for(int i=0;i<5;i++){for(int j=0;j<i+1;j++){System.out.print(j+1);}System.out.println();}}}12)Constructorclass A{int a,b;A(){System.out.println("enter");a=10;b=20;System.out.println(a);System.out.println(b);}}class Constructor{public static void main(String args[]){A a=new A();A a1=new A();A a2=new A();}}13)Prime number.Code :-import java.util.Scanner;class prime{ public static void main(String args[]) { int a,i; Scanner D=new Scanner(System.in); System.out.println("enter value of a"); a=D.nextInt(); for(i=2;i<=a-1;i++) { if(a%2==0) { System.out.println("not prime"); break; } else { System.out.println("prime"); break; } } }}Output :-14) Swapping (using third variable or without third variable)Code:- import java.util.Scanner;class swap{ public static void main(String args[]) { int a,b,c; Scanner D=new Scanner(System.in); System.out.println("enter value of a"); a=D.nextInt(); System.out.println("enter value of b"); b=D.nextInt(); c=a; a=b; b=c; System.out.println(a); System.out.println(b); }}Output :-15) If - else example (eligible to vote)Code:-import java.util.Scanner;class A{ public static void main(String args[]) { Scanner sc=new Scanner(System.in); System.out.println("enter your age :"); int a=sc.nextInt(); if(a<18) { System.out.println("not eligible for vote"); } else { System.out.println("eligible for vote"); } } }Output :-16) Print the value of array element of 1 - D array.Code :-import java.util.Scanner;class array{ public static void main(String arg[]) { int a[]=new int[5]; Scanner D=new Scanner(System.in); for(int i=0;i<5;i++) { System.out.println("enter a number"); a[i]=D.nextInt(); } for(int i=0;i<5;i++) { System.out.println(a[i]); } }}Output :-17) Let us assume there exist a company which contains company name, location, license number. Let us assume there exist a permanent employee which contains employee number, employee name designation and basic salary. D = 30 % of basic salary TA = 15% of basic salary CA = 2% MA = 5% HRA = 10% GPF = 2% LIC = 5% Cal net Sal = (basic salary + DA +TA + CA + MA + HRA+) - (LIC + GPF) generate employee pay slip. Let us assume there exist a adhere employee which contains ename, no of working days and wage per days. Calculate total salary of the employee. Total = no. of working days+ wage per day Generate total salary. Code :- import java.util.Scanner;class company{ String com_name,com_loc; int lic_no; Scanner D=new Scanner(System.in); void m() { System.out.println("enter the company name"); com_name=D.nextLine(); System.out.println("\nenter the company location"); com_loc=D.nextLine(); System.out.println("\nenter the licence number"); lic_no=D.nextInt(); }}class employee extends company{ String emp_name,emp_desig; int emp_no,bas_sal,DA,TA,CC,MA,HRA,GPF,LIC,tot_sal,t; Scanner D=new Scanner(System.in); void m1() { System.out.println("\nenter the name of employee"); emp_name=D.nextLine(); System.out.println("\nenter the employe's designation"); emp_desig=D.nextLine(); System.out.println("\nenter the employee number"); emp_no=D.nextInt(); System.out.println("\nenter the basic salary"); bas_sal=D.nextInt(); DA=(30*bas_sal)/100; TA=(15*bas_sal)/100; CC=(2*bas_sal)/100; MA=(5*bas_sal)/100; HRA=(10*bas_sal)/100; GPF=(2*bas_sal)/100; LIC=(5*bas_sal)/100; t=GPF+LIC; tot_sal=(bas_sal+DA+TA+CC+MA+HRA-t); System.out.println("\n******************************************************************************************************"); System.out.println("\n\t\t\t\t\t\tPAY SLEEP\t\t\t"); System.out.println("\nCOMPANY NAME:\t"+com_name); System.out.println("COMPANY LOCATION:\t"+com_loc); System.out.println("COMPANY LICENCE NUMBER:\t"+lic_no); System.out.println("\nEMPLOYEE NAME:\t"+emp_name); System.out.println("EMPLOYEE DESIGNATION:\t"+emp_desig); System.out.println("EMPLOYEE NUMBER:\t"+emp_no); System.out.println("BASIC SALARY:\t"+bas_sal); System.out.println("\nDA:\t"+DA+"\t\t\tTA:\t"+TA+"\t\t\tCC:\t"+CC); System.out.println("MA:\t"+MA+"\t\t\tHRA:\t"+HRA); System.out.println("GPF:\t"+GPF+"\t\t\tLIC:\t"+LIC); System.out.println("\nTOTAL SALARY:\t"+tot_sal); System.out.println("******************************************************************************************************"); }}class a_employee extends employee{ String name; int no_of_days, w_per_day,tot_in; Scanner D=new Scanner(System.in); void m2() { System.out.println("\nEMPLOYEE NAME:"); name=D.nextLine(); System.out.println("NUMBER OF WORKING DAYS:"); no_of_days=D.nextInt(); System.out.println("WAGE PER DAY :"); w_per_day=D.nextInt(); tot_in=no_of_days*w_per_day; System.out.println("\n******************************************************************************************************"); System.out.println("\n\t\t\t\t\tPAY SLEEP\t\t\t"); System.out.println("EMPLOYEE NAME:\t"+name); System.out.println("NUMBER OF WORKING DAYS:\t"+no_of_days); System.out.println("WAGE PER DAY:\t"+w_per_day); System.out.println("\nTOTAL WAGE:\t"+tot_in); System.out.println("******************************************************************************************************"); }}class employe{ public static void main(String arg[]) { a_employee a=new a_employee(); a.m(); a.m1(); a.m2(); }} Output :- 18)Sortingclass Sort{public static void main(String args[]){int a[]={06,31,24,22,27};for(int i=0;i<5;i++){for(int j=0;j<i;j++){if(a[i]<a[j]){int c=a[j]; a[j]=a[i]; a[i]=c;}}}for(int k=0;k<5;k++){System.out.println(a[k]);}}}19)To write 1-10 number in fileimport java.io.*;class File3{public static void main(String args[]){try{File F = new File("abc.txt");F.createNewFile();//System.out.println(F.exists());//System.out.println(F.length());FileOutputStream fos=new FileOutputStream(F);for(int i=1;i<11;i++){fos.write(i);}}catch(Exception ae){System.out.println("file handeling error");}}}20)Collectionimport java.util.*;class Collection{public static void main(String []args){Vector v = new Vector();System.out.println(v.capacity());for(int i=0;i<10;i++){v.addElement(i);}System.out.println(v.capacity());v.addElement("A");System.out.println(v.capacity());System.out.println(v);}}21)Arraylistimport java.util.*;class Arraylist{public static void main(String []args){ArrayList l = new ArrayList();l.add('N');l.add('A');l.add('T');l.add('R');l.add('A');l.add('J');l.add('2');l.add('0');l.add('1');System.out.println(l);}}22)ENUMERATORimport java.util.*;class Enumerator{public static void main(String args[]){//int i;Vector v=new Vector();for(int i=0;i<10;i++){v.addElement(i);}Enumeration E=v.elements();while(E.hasMoreElements()){Integer i=(Integer)E.nextElement();if(i%2==0){System.out.println(i);}}System.out.println(v);}}23)Tryimport java.util.Scanner;class Try{public static void main(String args[]){try{Scanner s=new Scanner (System.in);int a,b,c;System.out.println("enter a number");a=s.nextInt();System.out.println("enter a number");b=s.nextInt();c=a/b;System.out.println(c);}catch(Exception a){System.out.println("not zero in denominator");}}}24)Try +Finallyimport java.util.Scanner;class Try2{public static void main(String args[]){try{Scanner s=new Scanner (System.in);int a,b,c;System.out.println("enter a number");a=s.nextInt();System.out.println("enter a number");b=s.nextInt();c=a/b;System.out.println(c);}catch(Exception a){System.out.println("not zero in denominator");}finally{System.out.println("exit");}}}25)Nested tryimport java.util.Scanner;class Try3{public static void main(String args[]){try{Scanner s=new Scanner (System.in);int a,b,c;System.out.println("enter a number");a=s.nextInt();System.out.println("enter a number");b=s.nextInt();c=a/b;System.out.println(c);}catch(Exception a){try { int d,e,f;Scanner s=new Scanner (System.in);System.out.println("enter a number");d=s.nextInt();System.out.println("enter a number");e=s.nextInt();f=d+e;System.out.println(f);}catch(Exception b){System.out.println("error");}System.out.println("not zero in denominator");}finally{System.out.println("exit");}}}26)Try+Finally 2import java.util.Scanner;class Try4{public static void main(String args[]){try{Scanner s=new Scanner (System.in);int a,b,c;System.out.println("enter a number");a=s.nextInt();System.out.println("enter a number");b=s.nextInt();c=a/b;System.out.println(c);}catch(Exception a){System.out.println("not zero in denominator");}finally{try { int d,e,f;Scanner s=new Scanner (System.in);System.out.println("enter a number");d=s.nextInt();System.out.println("enter a number");e=s.nextInt();f=d+e;System.out.println(f);}catch(Exception b){System.out.println("error");}System.out.println("exit");}}}27)Nested Try 2import java.util.Scanner;class Try5{public static void main(String args[]){try{Scanner s=new Scanner (System.in);int a,b,c;System.out.println("enter a number");a=s.nextInt();System.out.println("enter a number");b=s.nextInt();c=a/b;System.out.println(c);try { int d,e,f;System.out.println("enter a number");d=s.nextInt();System.out.println("enter a number");e=s.nextInt();f=d+e;System.out.println(f);}catch(Exception ae){System.out.println("error");}}catch(Exception a4){System.out.println("not zero in denominator");}finally{System.out.println("exit");}}} 28)Palindrome digit or string. Code :- import java.util.Scanner;class palindrome{ public static void main(String arg[]) { int c,i; String a,b=""; Scanner D=new Scanner(System.in); System.out.println("enter a string:"); a=D.nextLine(); c=a.length(); for(i=c-1;i>=0;i--) { b=b+a.charAt(i); } if(a.equalsIgnoreCase(b)) { System.out.println("string is palindrome"); } else { System.out.println("string is not palindrome"); } }}Output :-29) A shop will give discount of 10 percent if the cost of purchased quantity is more than 1000.Ask user for quantity and suppose 1 unit will cost 100, judge and print total cost for user.Code :-import java.util.Scanner;class sell{ public static void main(String args[]) { float tot_cost,dis; int a,c; Scanner D =new Scanner(System.in); System.out.println("enter the quantity:"); a=D.nextInt(); c=a*100; if(c>1000) { dis=(c*10)/100; tot_cost=c-dis; System.out.println("total cost:"+tot_cost); } else { System.out.println("total cost:"+c); } }}Output :-30) Program for uppercase, lowercase, string equality, remove whitespaces.Code :-import java.lang.String;class string{ public static void main(String arg[]) { String s1="hellow"; String s2=s1.toUpperCase(); String s3=s2.toLowerCase(); System.out.println(s2); System.out.println(s3); System.out.println(s2); System.out.println(s3.equals(s1)); System.out.println(s2.equals(s1)); String s5="HELLOW"; System.out.println(s5.equals(s1)); System.out.println(s5.equalsIgnoreCase(s1)); String s6=" hellow "; System.out.println(s6); System.out.println(s6.trim()); System.out.println(s1.replace('l','t')); System.out.println(s1.concat("world")); System.out.println(s1.indexOf('e')); System.out.println(s1.length()); System.out.println(s1.split(s1)); System.out.println(s1.replace('e','o')); }}Output :-31) Exception handling example.sCode :-import java.util.Scanner;class exception{ public static void main(String args[]) { Scanner sc=new Scanner(System.in); int i,j,k; try { System.out.println("enter the vaalue of i:"); i=sc.nextInt(); System.out.println("enter the vaalue of j:"); j=sc.nextInt(); k=i/j; System.out.println(k); } catch(ArithmeticException c) { System.out.println("zero division error"); } }}Output :-32) Print duplicate character from string.Code :-import java.util.Scanner;class dup{ public static void main(String arg[]) { int i,j,b; String a; Scanner D =new Scanner(System.in); System.out.println("enter a string"); a=D.nextLine(); b=a.length(); for(i=0;i<b;i++) { for(j=i+1;j<b;j++) { if(a.charAt(i)==a.charAt(j)) { System.out.println(a.charAt(j)); break; } } } }}Output :-33) Take a value of length and breadth of rectangle from user and check if it is square or not?Code :-import java.util.Scanner;class rec{ public static void main(String args[]) { int a,b; Scanner D =new Scanner(System.in); System.out.println("enter length:"); a=D.nextInt(); System.out.println("enter breadth:"); b=D.nextInt(); if(a==b) { System.out.println("it is a square:"); } else { System.out.println("it is not a square"); } }} Output :- 34)for loop :Code:class add1{public static void main(String[] args){int i, a=0;for ( i=1;i<11;i++){ a=a+i;System.out.println(a);}}}Output:35) 1d and 2d arrayCode:class array{public static void main(String[] agrs){int [][] a=new int [3][];a[0]=new int[3];a[1]=new int[2];a[2]=new int[1];a[0][0]=50;a[0][1]=10;a[0][2]=40;a[1][0]=660;a[1][1]=990;a[2][0]=660;System.out.println(a[0][0]);System.out.println(a[0][1]);System.out.println(a[0][2]);System.out.println(a[1][0]);System.out.println(a[1][1]);System.out.println(a[2][0]);}}Output:36) Enter data in file import java.io.*;class file{public static void main(String args[])throws Exception{ String str = "adsasdads";FileWriter fw = new FileWriter("abc.txt");for (int i=0;i<str.length();i++)fw.write(str.charAt(i));System.out.println("writting file");fw.close();//File f = new File("abc.txt");//f.createNewFile();//System.out.println(f.exists());}}Output:37) read data in file Code:class ReadFile { public static void main(String[] args) throws IOException { int ch; FileReader fr=null; try { fr = new FileReader("abc.txt"); } catch (FileNotFoundException fe) { System.out.println("File not found"); } while ((ch=fr.read())!=-1) System.out.print((char)ch); fr.close(); } }Output:38) Code:class a{int m1(){int a=10;System.out.println(a);return a;}}class b extends a{void b(){int a=24;int b=super.m1();System.out.println(b);System.out.println(a);}}class sp{public static void main(String args[]){b a = new b();a.m1();}}Ouput:39)Adiition through scanner classCode:import java.util.Scanner;class two{public static void main(String args[]){Scanner sc=new Scanner(System.in);int a;System.out.print("enter value:");a=sc.nextInt();int b;System.out.print("enter value:");b=sc.nextInt();int c;c=a+b;System.out.println("The addition is:");System.out.println(c);}}Ouput:40) To shoe derived class.Code: class Base {public void show() {System.out.println("Base::show() called");}}class Derived extends Base {public void show() {System.out.println("Derived::show() called");}}class Main {public static void main(String[] args) {Base b = new Derived();;b.show();}}Ouput: ................
................

In order to avoid copyright disputes, this page is only a partial summary.

Google Online Preview   Download