import java.util.*;
public class TestVector { public static void main(String[] args) {
int b = 0; Vector v = new Vector();
System.out.println("please enter number:");
int sum = 0;
while(true)
{
try
{
b = System.in.read();
}
catch(Exception e)
{
e.printStackTrace();
}
if (b == '\r'||b == '\n')
break;
else
{
int num = b - '0';
v.addElement(new Integer(num));
}
}
//int sum = 0;
Enumeration e = v.elements();
while(e.hasMoreElements())
{
Integer intObj = (Integer)e.nextElement();
sum += intObj.intValue();
}
}
System.out.println(sum);
}
错误是:
--------------------Configuration: TestVector - JDK version 1.5.0 <Default> - <Default>--------------------
F:\javawork\lesson2\TestVector.java:37: <identifier> expected
System.out.println(sum);
^
1 errorProcess completed.
public class TestVector { public static void main(String[] args) {
int b = 0; Vector v = new Vector();
System.out.println("please enter number:");
int sum = 0;
while(true)
{
try
{
b = System.in.read();
}
catch(Exception e)
{
e.printStackTrace();
}
if (b == '\r'||b == '\n')
break;
else
{
int num = b - '0';
v.addElement(new Integer(num));
}
}
//int sum = 0;
Enumeration e = v.elements();
while(e.hasMoreElements())
{
Integer intObj = (Integer)e.nextElement();
sum += intObj.intValue();
}
}
System.out.println(sum);
}
错误是:
--------------------Configuration: TestVector - JDK version 1.5.0 <Default> - <Default>--------------------
F:\javawork\lesson2\TestVector.java:37: <identifier> expected
System.out.println(sum);
^
1 errorProcess completed.
写错地方了
public class TestVector { public static void main(String[] args) {
int b = 0; Vector v = new Vector();
System.out.println("please enter number:");
int sum = 0;
while(true)
{
try
{
b = System.in.read();
}
catch(Exception e)
{
e.printStackTrace();
}
if (b == '\r'||b == '\n')
break;
else
{
int num = b - '0';
v.addElement(new Integer(num));
}
}
//int sum = 0;
Enumeration e = v.elements();
while(e.hasMoreElements())
{
Integer intObj = (Integer)e.nextElement();
sum += intObj.intValue();
}
System.out.println(sum); //put it here
} }
System.out.println(sum);
要放到 main()方法的里面!!
晕
System.out.println(sum);
要放到 main()方法的里面!!
同意!必须注意!变量的有效范围!
要放到 main()方法的里面!!