Write a line of code that declares a variable named layout of type LayoutManager and initializes it with a new object， which when used with a container can lay out components in a rectangular grid of equal-sized rectangles， 3 components wide and 2 components high.（）

Given that a static method doIt（） in a class Work represents work to be done， what block of code will succeed in starting a new thread that will do the work？  
CODE BLOCK a：  
Runnable r = new Runnable（） {  
public void run（） {  
Work.doIt（）；  
}  
}；  
Thread t = new Thread（r）；  
t.start（）；  
CODE BLOCK b：  
Thread t = new Thread（） { 
public void start（） {  
Work.doIt（）；  }  }；  
t.start（）；  
CODE BLOCK c：  
Runnable r = new Runnable（） {  
public void run（） {  
Work.doIt（）；  
}  
}； 
 r.start（）； 
CODE BLOCK d：  
Thread t = new Thread（new Work（））；  
t.start（）；  
CODE BLOCK e：  
Runnable t = new Runnable（） { 
 public void run（） {  
Work.doIt（）；  
}  
}；  
t.run（）；  

What will be written to the standard output when the following program is run？（） 
public class Qd803 {  
public static void main（String args[]） {  
String word = "restructure"；  
System.out.println（word.substring（2， 3））；  
}  
}  

What is wrong with the following code？（）  
class MyException extends Exception {}  
public class Qb4ab {  
public void foo（） {  try {  bar（）；  } finally {  baz（）；  
} catch （MyException e） {} 
}  
public void bar（） throws MyException {  
throw new MyException（）； 
}  
public void baz（） throws RuntimeException {  
throw new RuntimeException（）； 
 }  
}