2.differance between throw and throws, and difference between final,finally,finalize and difference between arraylist and linked list

Question

Accepted Answer

throw is used to explicitly throw an exception, while throws is used to declare exceptions that a method may throw.

throw is used within a method to throw an exception explicitly
throws is used in the method signature to declare the exceptions that the method may throw
final is a keyword used to make a variable, method, or class unchangeable
finally is a block that is used to execute code regardless of whether an exception is thrown or not
finalize is a method that is called by the garbage collector before an object is destroyed
ArrayList and LinkedList are both implementations of the List interface in Java
ArrayList is backed by an array, while LinkedList is backed by a doubly-linked list
ArrayList provides fast random access, while LinkedList provides fast insertion and deletion

Accepted Answer

public class RightTrianglePattern   
{   
public static void main(String args[])   
{   
//i for rows and j for columns      
//row denotes the number of rows you want to print  
int i, j, row=6;   
//outer loop for rows  
for(i=0; i
{   
//inner loop for columns  
for(j=0; j<=i; j++)   
{   
//prints stars   
System.out.print("* ");   
}   
//throws the cursor in a new line after printing each line  
System.out.println();   
}   
}   
}  

Output:

*

**

***

****

*****

******

Accepted Answer

The String is immutable in Java because of the security, synchronization and concurrency, caching, and class loading

Accepted Answer

The final, finally, and finalize are keywords in Java that are used in exception handling. Each of these keywords has a different functionality. The basic difference between final, finally and finalize is that the final is an access modifier, finally is the block in Exception Handling and finalize is the method of object class.

ArrayList internally uses a dynamic array to store the elements.

LinkedList internally uses a doubly linked list to store the elements.

Accepted Answer

The throws keyword is used to declare which exceptions can be thrown from a method, while the throw keyword is used to explicitly throw an exception within a method or block of code

Accepted Answer

throw keyword is used to throw an exception object explisitly.

throw kewword always present inside method body.

throw is followed by an instance.

*throws

throws keyword is used to declare an exception as well as by pass the caller.

throws is always used with method signature

throws is followed bt class.

*final

final is a keyword.

we write the final in variable, method,class we cannot change.

*finally

finally is a block.

we use either try or try and catch block.

*finalize

it is a method.

*arraylist

it is index based.

arraylist store in the form of array .

data structure is growable or resizable array.

arraylist has 3 overload constructor.

arraylist has initial capacity and increamental capacity.

*LinkedList

it is also index based.

LinkedList store the data in form of node.

it has double e LinkedList

it has 2 Constructures

it has only initial capacity.

2.differance between throw and throws, and difference between final,finally,finalize and difference between arraylist and linked list

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