try {
    System.out.println("Enter name:");
    name=input.readLine();
}
catch(IOException ioe) {}

import java.io.*;
public class Input{
    public static InputStreamReader reader=new 
    InputStreamReader(System.in);
    public static BufferedReader input=new 
    BufferedReader(Reader);
    public static void main (String args[]);
    String name;
    int age;
    try{
    System.out.println("Enter name:");
    name=input.readLine();
    }
    catch(IOException ioe) {}
    try{
    System.out.println("Enter age:");
    age=Integer.parseInt(input.readLine());
    }
    catch (IOException ioe) {}
    if (age<=17){
    System.out.println("Too Young");
    }else if(age>=18){
    System.out.println("You're ready to vote!");
    }
}

import java.io.*;
public class Input
{
//    public static InputStreamReader reader=new InputStreamReader(System.in);
//    public static BufferedReader input=new BufferedReader(Reader);
	//Wrong declaration of buffered reader (I think...) use this instead
	public static BufferedReader input = new BufferedReader(new InputStreamReader(System.in));
 
    public static void main (String args[]) //Your void main has a ";" which only use to terminate a statement
	{ //You missed the opening bracket of main 
	    String name;
	    int age=0; //Variables needs to initialize first
	    try{ //If you have multiple input you can use one try...catch statement to all like input like this...
	    System.out.println("Enter name:");
	    name=input.readLine();
	    System.out.println("Enter age:");
	    age=Integer.parseInt(input.readLine());
	    }
	    catch(IOException ioe) {}
 
	    if (age<=17){
	    System.out.println("Too Young");
	    }else if(age>=18){
	    System.out.println("You're ready to vote!");
		}
	} // You also missed the closing bracket of the main
}