What will be the result of attempting to compile and run the following code？（）  
public class Q6b0c {  
public static void main（String args[]） { 
int i = 4； 
float f = 4.3；  
double d = 1.8；  
int c = 0；  
if （i == f） c++；  
if （（（int） （f + d）） == （（int） f + （int） d））
 c += 2； 
 System.out.println（c）； 
 }  
}  

Given the following interface definition， which definitions are valid？（）  
interface I {  
void setValue（int val）；  
int getValue（）； 
 }   
DEFINITION a：  
（a） class a extends I {  int value；  
void setValue（int val） { value = val； 
}  
int getValue（） { 
return value；
 }  
}  
DEFINITION b：  
（b） interface b extends I {  
void increment（）； 
 }  
DEFINITION c：  
（c） abstract class c implements I {  
int getValue（） {
 return 0； 
}  abstract void increment（）；  
}  
DEFINITION d：  
（d） interface d implements I {  void increment（）；  }  
DEFINITION e：  
（e） class e implements I {  int value；  
public void setValue（int val） { value = val； }  }  

What will be the result of attempting to compile and run the following program？（）  
public class Q28fd {  
public static void main（String args[]） {  
int counter = 0；  
l1：  
for （int i=10； i<0； i--） {  
l2：  int j = 0；  
while （j < 10） { 
 if （j > i） break l2；  
if （i == j） {  
counter++；  
continue l1；  
}  
}  
counter--；  
}  
System.out.println（counter）； 
}  
} 
 

Which method implementations will write the given string to a file named "file"， using UTF8 encoding？（）  
IMPLEMENTATION a： 
 public void write（String msg） throws IOException {  
FileWriter fw = new FileWriter（new File（"file"））；  
fw.write（msg）；  
fw.close（）；  
}  
IMPLEMENTATION b： 
 public void write（String msg） throws IOException { 
 OutputStreamWriter osw =  new OutputStreamWriter（new FileOutputStream（"file"）， "UTF8"）；  osw.write（msg）；  
osw.close（）；  
}  
IMPLEMENTATION c：  
public void write（String msg） throws IOException {  FileWriter fw = new FileWriter（new File（"file"））；  
fw.setEncoding（"UTF8"）；  
fw.write（msg）；  
fw.close（）；  }  
IMPLEMENTATION d：  
public void write（String msg） throws IOException {  FilterWriter fw = FilterWriter（new FileWriter（"file"）， "UTF8"）；  
fw.write（msg）；  fw.close（）；  
}  
IMPLEMENTATION e：  
public void write（String msg） throws IOException {  
OutputStreamWriter osw = new OutputStreamWriter（  new OutputStream（new File（"file"））， "UTF8"  ）；  
osw.write（msg）；  
osw.close（）；  
}  

Given the following code， which code fragments， when inserted at the indicated location， will succeed in making the program display a button spanning the whole window area？（）  
import java.awt.*； 
 public class Q1e65 {  
public static void main（String args[]） {  
Window win = new Frame（）；  
Button but = new Button（"button"）；  
// insert code fragment here  win.setSize（200， 200）； 
 win.setVisible（true）； 
 }  
}