Reverse Words in a Sentence

 

 

Count Specific Character in a String

   

Merge Two arrrays and Sort

 

Remove duplicate values of an array

 

Calculate Total

 Write a Java program to calculate the total of the numbers of an array

 

System.out.println()

 System

• It is a final clas
• Has private constructor
• Doesn;t allow to instantiated
• Provide facilities to standard input ,output

out

• static method
• It is used to display output 

println

• Method in printStream class
• It takes one argument
• Data type of argument is String

StringBuffer and StringBuilder

 StringBuffer 

• Synchronized
• Thread safe

StringBuilder

• Not synchronized
• Not thread safe