Monday 31 July 2017

Java basics

The following example uses a Class object to print the class name of an object
=======================================================

package source;

class calculate{
void print(){
System.out.println("inside print");
}

}

public class Employee {

public static void main(String args[]){

calculate obj=new calculate();

System.out.println(obj.getClass().getName()); //source.calculate
}

}

=================================================

Tuesday 18 July 2017

Java Calendar

Calendar cal_Two = Calendar.getInstance(TimeZone.getTimeZone("UTC"));
System.out.println(cal_Two.getTime());

and the response i got is:

Sat Jan 25 15:44:18 IST 2014

===========================
https://stackoverflow.com/questions/21349475/calendar-getinstancetimezone-gettimezoneutc-is-not-returning-utc-time

Thursday 6 July 2017

Code camp- Java Script

https://repl.it/languages/javascript
=================================
function rot13(str) { // LBH QVQ VG!

// console.log(str.charAt(0));

// console.log(str.charCodeAt(0));
// var x=str.charCodeAt(0)-13;
// console.log(str.charCodeAt(0)-13);
// console.log(String.fromCharCode(x));
var m,n;
var p,q,r,s;
var arr=str.split('');
var newStr=[];
var finStr="";

for(var i=0;i<arr.length;i++){
// m=parseInt(str.charCodeAt(i)+13);
// n=parseInt(str.charCodeAt(i)-13);

// console.log(m);

p=str.charCodeAt(i);
//console.log(p);
//console.log(parseInt(p));

if(parseInt(p)>=78)
{
console.log("if");
n=parseInt(str.charCodeAt(i)-13);
q=(String.fromCharCode(n));
newStr.push(q);
//console.log(n);
// console.log(String.fromCharCode(n));
// newStr.concat(String.fromCharCode(m));

}
else {
console.log("else");
m=parseInt(str.charCodeAt(i)+13);
// console.log(m);
// console.log(String.fromCharCode(m));

r=(String.fromCharCode(m));
//console.log(r);
//finStr.concat(r);
newStr.push(r);
}

}

console.log(newStr.toString().replace( /,/g,"").replace(/-/g," "));

}
// // console.log(arr);

// for(var i=0;i<arr.length;i++){
// m=parseInt(str.charCodeAt(i)+13);
// console.log ( str.charAt(i)+" =>"+str.charCodeAt(i) +"=> "+parseInt(str.charCodeAt(i)+13)+"=>"+String.fromCharCode(m));
// if(parseInt(str.charCodeAt[i])>=78){
// n=parseInt(str.charCodeAt(i)-13);
// console.log(String.fromCharCode(n));
// }

// }
// // return str;
// }

// rot13("SERR PBQR PNZC");
//rot13("SERR CVMMN!"); //FREE PIZZA.
//rot13("GUR DHVPX OEBJA QBT WHZCRQ BIRE GUR YNML SBK.")
//rot13("MNOP");
//rot13("ABCD EFGH IJKL MNOP QRST UVWX YZ");

=========================

function rot13(str) { // LBH QVQ VG!

var m,n;
var p,q,r,s;
var arr=str.split('');
var newStr=[];

for(var i=0;i<arr.length;i++){
// m=parseInt(str.charCodeAt(i)+13);
// n=parseInt(str.charCodeAt(i)-13);

// console.log(m);

p=str.charCodeAt(i);
//console.log(p);
//console.log(parseInt(p));

if(parseInt(p)>=78)
{
n=parseInt(str.charCodeAt(i)-13);
//console.log(n);
// console.log(String.fromCharCode(n));
// newStr.concat(String.fromCharCode(m));
q=(String.fromCharCode(m));
newStr.push(q);

}
else {
m=parseInt(str.charCodeAt(i)+13);
// console.log(m);
// console.log(String.fromCharCode(m));

r=(String.fromCharCode(m));
//console.log(r);
//finStr.concat(r);
newStr.push(r);
}

}

//console.log(newStr.toString().replace(/\,/g,""));

str=newStr.toString().replace( /,/g,"").replace(/-/g," ");
return str;
}

// Change the inputs below to test
rot13("SERR PBQR PNZC");

======================================

Wednesday 5 July 2017

JavaScript

JavaScript

https://codepen.io/pen/

mdn Learning area

============================

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN">
<html lang="en">
<head>
<title>Apply JavaScript example</title>
</head>
<body>

<button>Click me</button>

<script>

// JavaScript goes here
function createParagraph() {
var para = document.createElement('p');
para.textContent = 'You clicked the button!';
document.body.appendChild(para);
}

var buttons = document.querySelectorAll('button');

for (var i = 0; i < buttons.length ; i++) {
buttons[i].addEventListener('click', createParagraph);
}

</script>

</body>
</html>

=======================

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN">
<html lang="en">
<head>
<title>Apply JavaScript example</title>
</head>
<body>

<p>Update your name</p>
<style>

p {
font-family: 'helvetica neue', helvetica, sans-serif;
letter-spacing: 1px;
text-transform: uppercase;
text-align: center;
border: 2px solid rgba(0,0,200,0.6);
background: rgba(0,0,200,0.3);
color: rgba(0,0,200,0.6);
box-shadow: 1px 1px 2px rgba(0,0,200,0.4);
border-radius: 10px;
padding: 3px 10px;
display: inline-block;
cursor:pointer;
}
</style>

<script>

// JavaScript goes here
var para = document.querySelector('p');

para.addEventListener('click', updateName);

function updateName() {
var name = prompt('Enter your name:');
para.textContent = 'Your Name ' + name;
}

</script>

</body>
</html>

=========================================

JavaScript

Array.prototype.splice()

var numbers=['one','two','three','five'];

numbers.splice(1); // [ 'one' ]
numbers.splice(2); // [ 'one', 'two' ]
numbers.splice(3); // [ 'one', 'two', 'three' ]

console.log(numbers);

==============================================================
Insert

numbers.splice(1,0,'nine'); //[ 'one', 'nine', 'two', 'three', 'five' ]

numbers.splice(3,0,'eight'); // [ 'one', 'two', 'three', 'eight', 'five' ]

====================================================================

Delete

numbers.splice(0,2); // [ 'three', 'five' ]

numbers.splice(2,1); //[ 'one', 'two', 'five' ]

numbers.splice(1,2); //[ 'one', 'five' ]

===========================================================
Delete & Insert

numbers.splice(1,1,'zero'); // [ 'one', 'zero', 'three', 'five' ]

numbers.splice(2,1,'six'); // [ 'one', 'two', 'six', 'five' ]

=================================================================

function mutation(arr) {

var m,n;

m=arr[0].toLowerCase().split('').sort().join('');
n=arr[1].toLowerCase().split('').sort().join('');
console.log(m);
console.log(n);
console.log(m==n);

}

mutation(["Hello", "hey"]); // false
mutation(["Alien", "line"]); // false
mutation(["rat", "tar"]); //true

mutation(["Alien", "line"]);
console.log(m.indexOf(n)!=-1);

==================================================

var numbers=[1,2,3,4,5];

var doubles=numbers.map(function(x){

return x*2;

})

console.log(doubles); // [ 2, 4, 6, 8, 10 ]

===========================================================

filter

var numbers=[12,34,2,45,64];

numbers.filter(greater);

function greater(x){

return x>30;

}

//[ 34, 45, 64 ]

====================================

var numbers=[12,34,2,45,64];

// numbers.filter(greater);

// function greater(x){

// return x>30;
// }

numbers.filter(function(x){
return x>30;

})

//[ 34, 45, 64 ]

======================================