SCJP程序員認(rèn)證考試章節(jié)練習(xí)(2020.04.07)

 public class Foo {  
private int val；  
public foo（int v） （val = v；） }  
public static void main （String args） {  
Foo a = new Foo （10）；  
Foo b = new Foo （10）；  
Foo c = a；  
int d = 10；  
double e = 10.0；  
}  
Which three logical expression evaluate to true？ （）

Given a correctly compiled class whose source code is：

Assume that the class file is located in /foo/com/sun/sjcp/， the current directory is /foo/， and that the classpath contains "." （current directory）.  
Which command line correctly runs Commander？（）

class One { 
void foo（） {} 
} 
class Two extends One { 
 //insert method here 
} 
Which three methods， inserted individually at line 14， will correctly complete class Two？（）

public class Foo {  
public void main （String args） {  
system.out.printIn（“Hello World.”）；  
}  
}  
What is the result？ （） 

String foo = “blue”；  
 Booleanbar = new Boolean [1]；  
 if （bar[0]） {  
 foo = “green”；  
 }  
What is the result？（）