来源: 互联网  发布时间: 2014-02-18

比较文本文件中相同内容
大概意思是 比较两个.txt文件中找出相同的数据  代码如下 大家帮忙看看对吗？

public class BufferedTest {

	public static void main(String[] args) {
		try {
			Scanner readr = new Scanner(System.in);
			System.out.println("输入第一个文件名:");
			String file1 = readr.next();
			System.out.println("输入第二个文件名:");
			String file2 = readr.next();
			FileReader inOne1 = new FileReader(file1);
			BufferedReader inTwo1 = new BufferedReader(inOne1);
			String s1 = null;
			int i = 0;
			boolean b = true;
			FileReader inOne2 = new FileReader(file2);
			BufferedReader inTwo2 = new BufferedReader(inOne2);
			String s2 = null;
			// 文件内容对比
			Vector listOK = new Vector();
			Vector listNO = new Vector();
			
			while ((s1 = inTwo1.readLine()) != null) {
				i++;
				while ((s2 = inTwo2.readLine()) != null) {
					//if (s1.equals(s2) != true) {//不同的数据
					if(s1.toString() == s2.toString()){	
						listNO.add(s1);
						listNO.add(s2);
						b = false;
					}else{
						listOK.add(s1);
					}
					break;
				}
			}
			if (b) {
				System.out.println("文件内容一样");
			}
			
			for (int j = 0; j < listNO.size(); j++) {
				System.out.println("不同的数据为 :" + listNO.get(j));
			}
			System.out.println("");
			for( int k = 0; k<listOK.size();k++){	
				System.out.println("相同的数据为:" + listOK.get(k));
			}
		} catch (IOException e) {
			System.out.println(e);
		}
	}

}

    

    来源: 互联网  发布时间: 2014-02-18

两个版本的jdk能否装在同一个机器上呢
这几天公司开发一个项目，用的jdk是1.4的。看着很不爽。前段时间装系统的时候，随手就把jdk1.4删了，换了一个1.6的。结果，程序不能正常运行了。今天只好又回滚回去了。我想问问高手们，我能否在一个机器上安装量个不同版本的jdk呢？？
谢谢，期待高手们的回复。

    

    来源: 互联网  发布时间: 2014-02-18

请教draw2d中鼠标拖曳的问题
运行了draw2d的一个例子，有两个节点和一条连线，程序中能够实现鼠标拖动节点的功能，但运行时却没有效果，请各位牛人帮我看一下，是不是程序本身有问题？？
多谢
程序如下：
import org.eclipse.draw2d.ChopboxAnchor;
import org.eclipse.draw2d.ColorConstants;
import org.eclipse.draw2d.Figure;
import org.eclipse.draw2d.IFigure;
import org.eclipse.draw2d.Label;
import org.eclipse.draw2d.LightweightSystem;
import org.eclipse.draw2d.LineBorder;
import org.eclipse.draw2d.MidpointLocator;
import org.eclipse.draw2d.MouseEvent;
import org.eclipse.draw2d.MouseListener;
import org.eclipse.draw2d.MouseMotionListener;
import org.eclipse.draw2d.PolygonDecoration;
import org.eclipse.draw2d.PolylineConnection;
import org.eclipse.draw2d.RectangleFigure;
import org.eclipse.draw2d.geometry.Dimension;
import org.eclipse.draw2d.geometry.Point;
import org.eclipse.draw2d.geometry.Rectangle;
import org.eclipse.swt.widgets.Display;

import org.eclipse.swt.widgets.Shell;


public class example {
public static void main(String args[]){
Shell shell=new Shell();
shell.setSize(350, 360);
shell.open();
shell.setText("demo");
LightweightSystem lws=new LightweightSystem(shell);
IFigure panel=new Figure();
lws.setContents(panel);
RectangleFigure
node1=new RectangleFigure(),
node2=new RectangleFigure();
node1.setBackgroundColor(ColorConstants.red);
node1.setBounds(new Rectangle(30,30,64,36));
node2.setBounds(new Rectangle(100,100,64,36));
PolylineConnection conn=new PolylineConnection();
conn.setSourceAnchor(new ChopboxAnchor(node1));
conn.setTargetAnchor(new ChopboxAnchor(node2));
conn.setTargetDecoration(new PolygonDecoration());

Label label=new Label("Midpoint");
label.setOpaque(true);
label.setBackgroundColor(ColorConstants.buttonLightest);
label.setBorder(new LineBorder());
conn.add(label,new MidpointLocator(conn, 0));

panel.add(node1);
panel.add(node2);
panel.add(conn);
new Dragger(node1);
new Dragger(node2);

Display display=Display.getDefault();
while(!shell.isDisposed()){
if(!display.readAndDispatch())
display.sleep();
}
}
static class Dragger extends MouseMotionListener.Stub implements MouseListener{
public Dragger(IFigure figure){
figure.addMouseMotionListener(this);
figure.addMouseListener(this);
}
Point last;
public void mouseReleased(MouseEvent e){
last=null;
}
public void mouseClicked(MouseEvent e){
}
public void mouseDoubleClicked(MouseEvent e){
System.out.println("c");
}
public void mousePressed(MouseEvent e){
last=e.getLocation();
e.consume();
System.out.println("a");
}
public void mouseDragger(MouseEvent e){
// if(last==null)
// return;
System.out.println("b");
Point p=e.getLocation();
Dimension delta=p.getDifference(last);
last=p;
Figure f=((Figure)e.getSource());
f.setBounds(f.getBounds().getTranslated(delta.width, delta.height));

}
};
}

中间增加的输出都是测试的，我鼠标拖动时发现程序根本就没有进入mousedragger方法，不知道为何