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。
interface Com {
int add(int a, int b);
public static int get(int n) {
return n;
}
public default int see(int n) {
return n;
}
public default int look(int n) {
return n;
}
}
class A implements Com {
public int add(int a, int b) {
return a + b;
}
public int see(int n) {
return n + 1;
}
}
public class Main {
public static void main(String args]) {
A a = new A();
int m = a.add(12, 6);
int n = Com.get(12);
int t = a.see(6);
int q = a.look(6);
System.out.printf("%d:%d:%d:%d", m, n, t, q); //【代码】
}
}
错误:方法参数与变量不匹配
B:20 and 40
C:10 and 40
D:10 and 20
">6.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
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) {
}
}
}
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