文档介绍：请将试题答在答题卡上，不要在试卷中做任何标记
一、基础题：
请写出输出结果
public class Testi (
public static void changeStr(String str) ( str=〃welcome〃;
}
public static void main(String[] args) {
String str—1234〃； changeStr(str);
System, out. printin (str);
}
}
—"1234〃
请写出输出结果
public class Test2 (
static boolean foo(char c) { System, out. print (c); return true;
)
public static void main(String[] argv) (
int i = 0;
for (foo ('A'); foo('B') && (i < 2) ; foo('C')) (
i++；
foo (' D');
}
}
}
ABDCBDCB
class A (
protected int methodi(int a, int b) ( return 0; }
)
以下A扩展类中的方法哪两个是正确的：(选择两个)
public int methodi(int a, int b) { return 0;}
private int methodi(int a, int b) ( return 0;}
private int methodi(int a, long b) { return 0;}
public short methodi(int a, int b) { return 0;}
static protected int methodi(int a, int b) { return 0;}
AD
public class Outer(
public void someOuterMethod() (
// Line 3
public class Inner(}
public static void main(String[] args) (
Outer o = new Outer();
// Line 8
}
}
下列哪一个对Inner类实例化的描述是正确的？ D
new Inner () ; //At line 3
new Inner () ; //At line 8
new o. Inner 0 ; //At line 8
new Outer. Inner () ; //At line 8//new Outer (). new Inner ()
下面这个程序正确吗？如果不正确请说出哪里错误。
public class Something {
public static void main(String[] args) ( Other o = new Other ();
new Something (). addOne (o);
)
public void addOne(final Other o) ( o. i++;
}
}
class Other