以下文字与答案无关
提示:有些试题内容 显示不完整,文字错误 或者 答案显示错误等问题,这是由于我们在扫描录入过程中 机器识别错误导致,人工逐条矫正总有遗漏,所以恳请 广大网友理解。
import java.io.*;
public class E {
public static void main(String args]) {
int n = -1;
File f = new File("hello.txt");
byte] a = "abcd".getBytes();
try {
FileOutputStream out = new FileOutputStream(f);
out.write(a);
out.close();
FileInputStream in = new FileInputStream(f);
byte] tom = new byte3];
int m = in.read(tom, 0, 3);
System.out.println(m); //【代码1】
String s=new String(tom,0,3); System.out.println(s); //【代码2】
m = in.read(tom, 0, 3);
System.out.println(m); //【代码3】
s = new String(tom, 0, 3);
System.out.println(s); //【代码4】
} catch (IOException e) {
}
}
}
错误:方法参数与变量不匹配
B:20 and 40
C:10 and 40
D:10 and 20
">11.以下代码的输出结果为( )。public class Pass{
static int j = 20;
public void amethod(int x){
x = x*2;
j = j*2;
}
public static void main(String args]){
int i = 10;
Pass p = new Pass();
p.amethod(i);
System.out.println(i+" and "+j);
}
}
错误:方法参数与变量不匹配
B:20 and 40
C:10 and 40
D:10 and 20