Find the error in the given statement:

int x = (a => b) ? "a" : "b";

What will be the output of the following code?

int x=2,y=5,a=0;
a=x; 
x=y; 
y=a; 
System.out.println("x=" + x + " 
y=" + 
y);

What will be the value of 'n' after the execution of the code given below?

int x=2, m=1, c=-1;
int n = x + c;
n = n - c + x;
System.out.println(n);

Find the error, if any, in the following code. Write the correct statement.

int a=5, b=10;
int x = (a>b)>true:false;