/* Expressions */

3

3+1

3.14*Math.sin(3)

true

!true

1<5

"This is a String"

"man"+"kind"

int x=4;

x*5

x++

++x

x

(x<5 ? "x is smaller than 5" : "x is greater or equal to 5")

/* Statements */

x++; System.out.println(x);

System.out.println("hi");

System.out.print("x*5="); System.out.println(x*5);

/* Method declaration */

int square(int x) { return x*x; }

square(100)

/* Class declaration */
// if you define a class, JOSH will try to 
// execute its main() method !!!

class A {
 void sayHi() { System.out.println("hi"); }
 void sayHo() { System.out.println("ho"); }
}

A a = new A();

a.sayHi(); a.sayHo();

class B extends A
{ void sayHi() { System.out.print("Hi"); }
  void sayHiHo() { sayHi(); sayHo(); }
}

(new B()).sayHiHo();

/* Exception handling and IO */

try { 
  java.io.BufferedReader inb = 
    new java.io.BufferedReader(new java.io.InputStreamReader(System.in));
  System.out.println("Enter your name: ");
  String name=inb.readLine();
  System.out.println("Hi "+name+", welcome to JOSH!");
 } catch (Exception e) 
   { System.out.println("Error: Could not read your name!");
   }