JAVA常用操作语句 项目中的总结四

 eclipse选一个变量后，这个类里的该变量不变色问题解决：
alt + shift + o

/**
* 写入日志
* filePath 日志文件的路径
* code 要写入日志文件的内容

*/

public

static

boolean
print(String filePath,String code) {

try
{
File tofile
=
new
File(filePath);
FileWriter fw
=
new
FileWriter(tofile,
true
);
BufferedWriter bw
=
new
BufferedWriter(fw);
PrintWriter pw
=
new
PrintWriter(bw);

System.out.println(getDate()
+
"
:
"
+
code);
pw.println(getDate()
+
"
:
"
+
code);
pw.close();
bw.close();
fw.close();

return

true
;
}
catch
(IOException e) {

return

false
;
}
}

/**
* 判断是不是合法手机
* handset 手机号码

*/

public

static

boolean
isHandset(String handset) {

try
{

if
(
!
handset.substring(
0
,
1
).equals(
"
1
"
)) {

return

false
;
}

if
(handset
==
null

||
handset.length()
!=
11
) {

return

false
;
}
String check
=

"
^[0123456789]+$
"
;
Pattern regex
=
Pattern.compile(check);
Matcher matcher
=
regex.matcher(handset);

boolean
isMatched
=
matcher.matches();

if
(isMatched) {

return

true
;
}
else
{

return

false
;
}
}
catch
(RuntimeException e) {

return

false
;
}
}
ISBN（国际标准书号）的校验
Java code
public

class
Test {

public

static

void
main(String[] args) {
System.out.println(
"
9787302155638
"

+
ISBN.checkISBN(
"
9787302155638
"
));
System.out.println(
"
7564105607
"

+
ISBN.checkISBN(
"
7564105607
"
));
System.out.println(
"
730213880X
"

+
ISBN.checkISBN(
"
730213880X
"
));
System.out.println(
"
7302138800
"

+
ISBN.checkISBN(
"
7302138800
"
));
System.out.println(
"
9790000000000
"

+
ISBN.checkIS