单项选择题
A. abc
B. null
C. abcdef
D. Compilation fails.
E. The code runs with no output.
F. An exception is thrown at runtime.
多项选择题 public static void main( String[] args ) { Integer a = new Integer(10); Integer b = new Integer(10); Integer c = a; int d = 10; double e = 10.0; } Which three evaluate to true?()
单项选择题 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.println(i.intValue()); } } What is the result? ()
单项选择题 int i = 0, j = 1; if ((i++ == 1) && (j++ == 2)) { i = 42; } System.out.println(“i = “ + i + “, j = “ + j); What is the result?()