public void amethod ( String s) C+=s; System. out. printIn(c); A编译通过并输出字符串"Helo" B编译通过并输出字符串"ello C编译通过并输出字符串"eloH" D编译出错 4.下面哪一项编译不会有错 A. package testpackage public class Test //do something.j class B. import java. io. package testpackage public class Test(//do something.) C. impo class Person ( //do something public class Test( /do something.i import java. awt. s public class Test(//do something.i 5.给出下面代码 3)public Parenti 5)public class Child extends Parent i 6) private String department; 7) public Child 8)public String get ValueOf return name, 9) public static void main(String argD)( 10)Parent p=new Parento 11)} 那些行将引起错误? A第3行public void amethod(String s){ char c='H'; c+=s; System.out.println(c); } } A 编译通过并输出字符串"Hello" B 编译通过并输出字符串"ello" C 编译通过并输出字符串"elloH" D 编译出错 4．下面哪一项编译不会有错？ A． package testpackage; public class Test{//do something…} class MyClass{} B．import java.io.*; package testpackage; public class Test{//do something…} C．import java.io.*; class Person{//do something…} public class Test{//do something…} D． import java.io.*; import java.awt.*; public class Test{//do something…} 5．给出下面代码： 1) class Parent { 2) private String name; 3) public Parent(){} 4) } 5) public class Child extends Parent { 6) private String department; 7) public Child() {} 8) public String getValue(){ return name; } 9) public static void main(String arg[]) { 10) Parent p = new Parent(); 11) } 12) } 那些行将引起错误？ A 第 3 行