public class test {  
public static void add3 （Integer i）{ 
int val = i.intValue （ ）；  
val += 3；  
i = new Integer （val）；  
 }   
 public static void main （String args [ ] ） 
{ Integer i = new Integer （0）；   
add3 （i）；  
system.out.printIn （i.intValue （ ） ）；  
}   
}  
What is the result？（）

Public class test （   
Public static void stringReplace （String text） （   
Text = text.replace （„j„ ， „i„）；   
）    
 public static void bufferReplace （StringBuffer text） （   
text = text.append （“C”）   ）    
 public static void main （String args ）{ 
String textString = new String （“java”）；   
StringBuffer text BufferString = new StringBuffer （“java”）；     
stringReplace （textString）；   
BufferReplace （textBuffer）；     
System.out.printIn （textString + textBuffer）；  
 }  
）  
What is the output？（）