Skip to content

Instantly share code, notes, and snippets.

View Vishuu005's full-sized avatar
🎯
Focusing

Vishuu005 Vishuu005

🎯
Focusing
View GitHub Profile
//Java Program to convert all primitives into its corresponding
//wrapper objects and vice-versa
public class WrapperExample3{
public static void main(String args[]){
byte b=10;
short s=20;
int i=30;
long l=40;
float f=50.0F;
double d=60.0D;
//Java program to convert object into primitives
//Unboxing example of Integer to int
public class WrapperExample2{
public static void main(String args[]){
//Converting Integer to int
Integer a=new Integer(3);
int i=a.intValue();//converting Integer to int explicitly
int j=a;//unboxing, now compiler will write a.intValue() internally
System.out.println(a+" "+i+" "+j);
//Java program to convert primitive into objects
//Autoboxing example of int to Integer
public class WrapperExample1{
public static void main(String args[]){
//Converting int into Integer
int a=20;
Integer i=Integer.valueOf(a);//converting int into Integer explicitly
Integer j=a;//autoboxing, now compiler will write Integer.valueOf(a) internally
System.out.println(a+" "+i+" "+j);
//A Java class to test the encapsulated class Account.
public class TestEncapsulation {
public static void main(String[] args) {
//creating instance of Account class
Account acc=new Account();
//setting values through setter methods
acc.setAcc_no(7560504000L);
acc.setName("Sonoo Jaiswal");
acc.setEmail("sonoojaiswal@javatpoint.com");
acc.setAmount(500000f);
@Vishuu005
Vishuu005 / File: Account.java
Created January 31, 2023 16:51
Another Example of Encapsulation in Java Let's see another example of encapsulation that has only four fields with its setter and getter methods.
//A Account class which is a fully encapsulated class.
//It has a private data member and getter and setter methods.
class Account {
//private data members
private long acc_no;
private String name,email;
private float amount;
//public getter and setter methods
public long getAcc_no() {
return acc_no;
//A Java class which has only setter methods.
public class Student{
//private data member
private String college;
//getter method for college
public void setCollege(String college){
this.college=college;
}
}
//A Java class which has only getter methods.
public class Student{
//private data member
private String college="AKG";
//getter method for college
public String getCollege(){
return college;
}
}
//A Java class to test the encapsulated class.
package com.javatpoint;
class Test{
public static void main(String[] args){
//creating instance of the encapsulated class
Student s=new Student();
//setting value in the name member
s.setName("vijay");
//getting value of the name member
System.out.println(s.getName());
@Vishuu005
Vishuu005 / File: Student.java
Created January 31, 2023 16:44
Simple Example of Encapsulation in Java Let's see the simple example of encapsulation that has only one field with its setter and getter methods.
//A Java class which is a fully encapsulated class.
//It has a private data member and getter and setter methods.
package com.javatpoint;
public class Student{
//private data member
private String name;
//getter method for name
public String getName(){
return name;
}
#include <iostream>
using namespace std;
struct Person
{
char name[50];
int age;
float salary;
};