多项选择题
下面哪段语法执行正确()
A. String s = "Gone with the wind";String t = " good ";String k = s + t;
B. String s = "Gone with the wind";String t; t = s[3] + "one";
C. String s = "Gone with the wind";String standard = s.toUpperCase();
D. String s = "home directory";String t = s - "directory";
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相关考题
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多项选择题
关于JAVA中数据类型描述正确的是()
A.double型是基本数据类型
B.Double型是基本数据类型
C.double型是引用数据类型
D.Double型是引用数据类型 -
单项选择题
如下代码: public void Test() { try { oneMethod(); System.out.println("condition 1"); } catch (ArrayIndexOutOfBoundsException e) { System.out.println("condition 2"); } catch(Exception e) { System.out.println("condition 3"); } finally { System.out.println("finally"); } } 如果oneMethod正常运行,则输出结果中是?()
A. condition 1 finally
B. condition 2 finally
C. condition 3 finally
D. finally -
单项选择题
执行以下代码,输出结果的结果是? () public class Test{ public String[] ss = new String[5]; public static void main(String[] args){ System.out.println(ss[1]); } }
A. null
B. -1
C. 编译时出错
D. 运行时报错
