捕获程序中出现的异常 可用于后期维护的必要性！做简单的测试 ！
package helpentity;
import java.io.bufferedreader;
import java.io.file;
import java.io.filereader;
import java.io.filewriter;
import java.io.printwriter;
import java.text.simpledateformat;
import java.util.date;
public class log {
private file file = null;
public file getfile() {
return file;
}
public void setfile(file file) {
this.file = file;
}
public void savelog(exception e, string youname) {
try {
string nowpath = null;
nowpath = system.getproperty("user.dir");
string temppath = null;
this.file = new file(nowpath);
temppath = this.file.getparent();
if (temppath == null) {
this.file = new file(nowpath);
}
this.file = new file(temppath + "" + file.separator + "log.txt");
printwriter writer = null;
filewriter filewrite = new filewriter(file, true);
writer = new printwriter(filewrite);
writer.append(system.getproperty("line.separator")
+ new simpledateformat("yyyy-mm-dd:hh:mm:ss")
.format(new date()) + "__" + youname);
writer.append(system.getproperty("line.separator"));
writer.append(" *************************" + e.tostring()
+ "*************************");
writer.append(system.getproperty("line.separator"));
e.printstacktrace(writer);
writer.flush();
writer.close();
} catch (exception e2) {
e2.printstacktrace();
}
}
}
更多java捕获异常信息存入txt文件示例。