Eclipse建议（Ctrl + Space）必须放在花括号中

Question

import java.sql.Driver;

import org.openqa.selenium.WebDriver;
import org.openqa.selenium.firefox.FirefoxDriver;


public class test {

    //{

    WebDriver driver = new FirefoxDriver();
    driver.

    //}
}

When I am commenting curly braces I am not getting proposals(ctrl+Space) after "driver.", while uncommenting curly braces gives proposals(ctrl+Space). Wasted many hours to get this solution, please help me out.

Answer 1

This is because it isn't legal syntactically to put a statement inside a class without enclosing it with braces or putting it inside a method.

Nothing strange going on here, just Java syntax rules.

Answer 2

Your code snipper is not part of a method. So without curly braces you are in Declare Member Mode . But, while declaring members you cannot invoke any methods on objects (or query any fields).

When placing the code snippet inside the curly braces, you are in fact inside an initializer block , where such code is allowed.

Eclipse knows that, and correctly does not provide you any proposals in the first scenario.