【简答题】考虑类A: public class A{ public int x=1; public void increaseBy(int n) {
x=x+n;
}
} 以下哪个选项程序代码段输出结果不会产生4?A. A a = new A( );a.x = 3 + a.x;System.out.print(a.x); B. A a = new A( );a.increaseBy(2);a.increa...
【单选题】下面程序代码运行结果为( )。 import java.awt.*; public class Test { public static void main (String args[]) { String s1='a+b+c'; String s2='+'; int i=s1.lastIndexOf (s2); System.out.println(i); } }