how to create an array in java
int[] array1 = new int[5]; //int array length 5
String[] array2 = new String[5] //String array length 5
double[] array3 = new double[5] // Double array length 5how to create an array in java
int[] array1 = new int[5]; //int array length 5
String[] array2 = new String[5] //String array length 5
double[] array3 = new double[5] // Double array length 5creating array of objects in java
class Main{
public static void main(String args[]){
//create array of employee object
Employee[] obj = new Employee[2] ;
//create & initialize actual employee objects using constructor
obj[0] = new Employee(100,"ABC");
obj[1] = new Employee(200,"XYZ");
//display the employee object data
System.out.println("Employee Object 1:");
obj[0].showData();
System.out.println("Employee Object 2:");
obj[1].showData();
}
}
//Employee class with empId and name as attributes
class Employee{
int empId;
String name;
//Employee class constructor
Employee(inteid, String n){
empId = eid;
name = n;
}
public void showData(){
System.out.print("EmpId = "+empId + " " + " Employee Name = "+name);
System.out.println();
}
}java initialize object array
import java.util.stream.Stream;
class Example {
public static void main(String[] args) {
int len = 5; // For example.
// Use Stream to initialize array.
Foo[] arr = Stream.generate(() -> new Foo(1)) // Lambda can be anything that returns Foo.
.limit(len)
.toArray(Foo[]::new);
}
// For example.
class Foo {
public int bar;
public Foo(int bar) {
this.bar = bar;
}
}
}java array object
Class obj[]= new Class[array_length]java array object
class ObjectArray{
public static void main(String args[]){
Account obj[] = new Account[2] ;
//obj[0] = new Account();
//obj[1] = new Account();
obj[0].setData(1,2);
obj[1].setData(3,4);
System.out.println("For Array Element 0");
obj[0].showData();
System.out.println("For Array Element 1");
obj[1].showData();
}
}
class Account{
int a;
int b;
public void setData(int c,int d){
a=c;
b=d;
}
public void showData(){
System.out.println("Value of a ="+a);
System.out.println("Value of b ="+b);
}
}Copyright © 2021 Codeinu
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