Input File Path as argument to program
File Path : E:\TestCode\Test file space\abc.xml
Code : This code will accept the above file path as argument.
package com.org;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
public class FileSepratorTest {
public static void main(String[] args) {
String filePath = args[0]; // It will take file path as E:\TestCode\Test file space\abc.xml
try {
System.out.println("File Path :"+filePath); // printing file path
FileInputStream file = new FileInputStream(new File(filePath));
} catch (FileNotFoundException e) {
// TODO Auto-generated …我需要在使用java中找到第二个最小的数字array.我有以下代码.它有点工作,但由于某种原因,它不会完全第二次通过数组来找到第二个最小值.它在第3个索引处停止并返回该值.如您所见,第二个最小值是在索引14.任何帮助将不胜感激.谢谢.
//用于查找数组中第一个和第二个最小数字的Java程序
public class FindSmallest2
{
public static void main(String[] args)
{
int[] values;
values = new int[15];
values[0]=341;
values[1]=273;
values[2]=278;
values[3]=329;
values[4]=445;
values[5]=275;
values[6]=275;
values[7]=243;
values[8]=334;
values[9]=412;
values[10]=393;
values[11]=299;
values[12]=343;
values[13]=317;
values[14]=265;
int small1, small2;
small1 = small2 = values[0];
for(int i = 1; i < values.length; i++)
{
if(values[i]<small1)
{
small2 = small1;
small1 = values[i];
}
}
System.out.println("1st smallest value: "+small1);
System.out.println("2nd smallest value: "+small2);
}
}
好的,我知道Batch Processing允许将相关的SQL语句分组到一个批处理中,并通过一次调用数据库来提交它们.当您一次向数据库发送多个SQL语句时,可以减少通信开销,从而提高性能.在这种特殊情况下(见下面的代码)我认为批处理不是唯一的目的.stmt.executeBatch()添加批次后立即调用原因(？)不会stmt.executeUpdate()做同样的事情？
public void tableChanged(TableModelEvent e) {
int row = e.getFirstRow();
int col = e.getColumn();
model = (MyTableModel) e.getSource();
String stulpPav = model.getColumnName(col);
Object data = model.getValueAt(row, col);
Object studId = model.getValueAt(row, 0);
System.out.println("tableChanded works");
try {
new ImportData(stulpPav, data, studId);
bottomLabel.setText(textForLabel());
} catch (ClassNotFoundException e1) {
e1.printStackTrace();
} catch (SQLException e1) {
e1.printStackTrace();
}
}
public class ImportData {
public ImportData(String a, Object b, Object c)
throws ClassNotFoundException, SQLException {
Statement stmt = …我想知道我的类中的变量类型,例如:
int x=1;
char c=5;
System.out.println(x+c);// out put is 6
但我想知道它的类型x+c,是否属于integer或character？并且还想在控制台中打印结果.
有没有找到类型的方法？请帮我解决最好的答案.