Write Java expression for:

$\dfrac{|𝑎 + 𝑏|}{\sqrt{a^2 + b^2}}$

Rewrite the following program segment using logical operators:

if(x > 5)
if(x > y)
    System.out.println(x + y);

Evaluate the expression when x is 4:

x += x++ * ++x % 2;

Write a Java program to obtain principal amount, rate of interest and time from user and compute simple interest.