第二天
1. 基本操作题
import javax.swing.JOptionPane;
public class Java_1 {
public static void main( String args[] ){
//变量初始化
int passes = 0, //考生通过的数目
failures = 0, //考生不通过的数目
student = 1, //学生计数器
result; //一门考生结果
String input, //用户输入的值
output; //输出字符串
//处理10名学生,用计数器控制循环
while ( student <= 10 ) {
input = JOptionPane.showInputDialog(
"输入结果(1=通过,2=不通过)" );
//*********Found**********
result = Integer.parseInt( __________________ );
if ( result == 1 )
passes = passes + 1;
else
failures = failures + 1;
student = student + 1;
}
//结果处理
output = "通过: " + passes +
"\n不通过: " + failures;
if( passes > 8 )
output = output + "\n提高学费";
//*********Found**********
JOptionPane._________________________( null, output,
"对考试结果的分析示例",
JOptionPane.INFORMATION_MESSAGE );
//*********Found**********
System._______________( 0 );
}
}
2. 简单应用题
import java.util.*;
public class Java_2
{
public static void main(String[] args)
{
Student[] java = new Student[3];
java[0] = new Student("李明", 80);
java[1] = new Student("赵冬", 75);
java[2] = new Student("王晓", 98);
//*********Found**********
Arrays.sort(__________________);
System.out.println("Java 成绩降序排序的结果是:");
for (int i = 0; i < java.length; i++)
{
Student e = java[i];
//*********Found**********
System.out.println("name=" + e.______________
+ ",fenshu=" + e.getFenshu());
}
}
}
//*********Found**********
class Student ___________________ Comparable
{
public Student(String n, double f)
{
name = n;
fenshu = f;
}
public String getName()
{
return name;
}
public double getFenshu()
{
return fenshu;
}
public int compareTo(Object otherObject)
{
Student other = (Student)otherObject;
if (fenshu < other.fenshu) return 1;
if (fenshu > other.fenshu) return -1;
return 0;
}
private String name;
//*********Found**********
private _________________ fenshu;
}
3. 简单应用题
import java.io.*;
public class Java_3
{
public static void main(String[] args)
{
Java_3 exceptionExample = new Java_3();
//*********Found**********
__________________
{
FileInputStream fi = new FileInputStream("C:" + "\\" + "abc.txt");
}
//*********Found**********
_________________(FileNotFoundException ex)
{
//*********Found**********
System.out.println(___________________.getMessage()+
"请确认文件路径及文件名是否正确!");
}
}
}
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