JAVA认证历年真题：310-025精选题（49）

会计考友 · 发表于 2012-8-4 12:33:16

310-025精选题（49）的具体内容如下：
224. Consider the following code: What will be printed?
public class Q{
public static void main(String arg[]){
int anar[] = new int[]{1,2,3};
System.out.println(anar[1]);
int i = 9;
switch(i){
default:System.out.println("default");
case 0:System.out.println("zero");break;
case 1:System.out.println("one");
case 2:System.out.println("two");
}
boolean b=true;
boolean b2 = true;
if (b==b2){
System.out.println("So true");
}
}
}
A. 2 default so true
B. 2 default zero so true
C. 1 default zero so true
D. 0 default so true
E. 2 default zero two
F. 2 default zero two so true
B.
225. Consider the following code: What will be printed?
public class Scope{
private int i;
public static void main(String arg[]){
Scope s = new Scope();
s.amethod();
}
public static void amethod(){
System.out.println(i);
}
}
A. 0
B. null
C. Error. Non-static variable i cannot be referenced from a static context.
D. Error. Variable i may not have been initialized.
C.

会计考友 · 发表于 2012-8-4 12:33:17

225b. Consider the following code: What will be printed?
public class Scope{
private int i;
public static void main(String arg[]){
Scope s = new Scope();
s.amethod();
}
public void amethod(){
System.out.println(i);
}
}
A. 0
B. null
C. Error. Non-static variable i cannot be referenced from a static context.
D. Error. Variable i may not have been initialized.
A. (check)
226. Consider the following code: What will be printed?
public class StringBuf{
public static void main(String args[]){
StringBuffer sb = new StringBuffer("abc ");
String s = new String(" a b c");
String st = "ABCDE";
sb.append("def ");//nu är s = abc def
sb.insert(1, " zzz ");//nu är s = a zzz bc def
String i = s.concat(st);
s = s.trim();
System.out.println(s);
System.out.println(sb);
System.out.println(st.indexOf("C"));
System.out.println(st.indexOf('A'));
System.out.println(st.indexOf('A', 2));
System.out.println(st.indexOf('G'));
System.out.println(i);
}
}
What will be printed?
A.
abc
azzz bc def
2
0
-1
-1
a b cABCDE
B.
a b c
abc def zzz
2
0
-1
-1
a b c ABCDE
C.
abc
abcdefzzz
2
0
1
-1
a b c ABCDE
D.
a b c
a zzz bc def
2
0
-1
-1
a b cABCDE
D.

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[考试试题] JAVA认证历年真题：310-025精选题（49）

JAVA认证历年真题：310-025精选题（49）

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