Assignment : Variables Assignments in Java

Write below programs in respective files. Compile & Execute, copy the outputs below the program in multiline comments in your sublime. Copy all the programs and paste it in assignment section. Each program carries 1 point. Total 2 points.

Answer :

class VariablesExp1 {
 public static void main(String[] felight){
 String str;
 str = "Felight";
 System.out.println(str);
 }
}
/*
D:\Felight\Basic Java>javac VariablesExp1.java

D:\Felight\Basic Java>java VariablesExp1
Felight
*/

 

class VariablesExp2{
 public static void main(String[] felight){
 int num=111;
 boolean iCanDoIt=true;
 double salary=606060;
 String str1,str2,str3;
 str1=str2=str3="I Love Felight";
 System.out.println(num);
 System.out.println(iCanDoIt);
 System.out.println(salary);
 System.out.println(str1);
 System.out.println(str2);
 System.out.println(str3);
 }
}

/*
D:\Felight\Basic Java>javac VariablesExp2.java

D:\Felight\Basic Java>java VariablesExp2
111
true
606060.0
I Love Felight
I Love Felight
I Love Felight

*/

 

class FinalVariables1{
 public static void main(String[] felight){
 final double PI=3.142;
 System.out.println(PI);
 }
}

/*
D:\Felight\Basic Java>javac FinalVariables1.java

D:\Felight\Basic Java>java FinalVariables1
3.142

*/

 

class FinalVariables2{
 public static void main(String[] felight){
 final int MAX;
 MAX=10;
 System.out.println(MAX);
 }
}
/*

D:\Felight\Basic Java>javac FinalVariables2.java

D:\Felight\Basic Java>java FinalVariables2
10

*/

 

class FinalVariables3{
 public static void main(String[] felight){
 final String PM="Modi";
 // PM="Rahul Gandhi"; 
 /*
 this above statement cannot be compiled as the String variable PM already declared as 
 final. That means the variable PM is a constant variable.
 */
 System.out.println(PM);
 }
}
/*
D:\Felight\Basic Java>javac FinalVariables3.java

D:\Felight\Basic Java>java FinalVariables3
Modi
*/