问答题 本题读取用户输入的字符流,直到用户输入字符串quit后结束。 importjava.io.*; public class javal{ public static void main(String[]args){ ; BufferedReader in; ir=new InputStreamReader(System.in); in=new BufferedReader(ir); System.OUt.println("please input:"); while( ){ try{ String s=in.readLine(); System.out.println("echo:"+s); if(S.equals("quit")) ; )catch(Exception e){ } } } }
判断题 按委托协议的约定,公积金管理中心应定期(每月和每年)按比例将委托贷款手续费划归给承办银行 。( )
问答题 本题是一个Applet,它显示了一个树型结构。单击树结点的时候,就能将其子结点展开,同时下面的文本框可以显示出所单击的结点的路径,比如单击了根结点下B结点下B2结点,则文本框显示为"[TOP,B,B2]"。 import java.awt.*; import java.awt.event.*; import javax.swing.*; import javax.swing.tree.*; public class java2 extends JApplet { JTree tree; JTextField jtf; public void init() { Container cp=getContentPane(); cp.setLayout(new BorderLayout()); top=new DefaultMutableTreeNode(" TOP"): DefaultMutableTreeNode a=new Default- MutableTreeNode("A"); DefaultMutableTreeNode al = new Default- MutableTreeNode("Al"); a.add(a1); DefatIltMutableTreeNode a2=new Default- MutableTreeNode("A2"); a.add(a2); DefaultMutableTreeNode a3=new Default- MutableTreeNode("A3"); a.add(a3); DefaultMutableTreeNode b=new Default- MutableTreeNode("B"); DefaultMutableTreeNode bl=new Default- MutableTreeNode("Bl"); b.add(b1); DefaultMutableTreeNode b2=new Default- MutableTreeNode("B2"); b.add(b2); DefaultMutableTreeNode b3=new Default- MutableTreeNode("B3"): b.add(b3); top.add(a); top.add(b); tree=new JTree(top); int v=ScrollPaneConstants.VERTICAL_ SCROLLBAR_AS_NEEDED; int h=ScrollPaneConstants.HORIZONTAL_ SCRoLLBAR_AS_NEEDED; JScrollPane jsp=new JScrollPane(tree,V,h); cp.add(jsp,BorderLayout.CENTER); jtf=new JTextField(20); cp.add(jtf,BorderLayout.SOUTH); tree.addMouseListener(new MouseAdapter() { public void mouseClicked(MouseEvent me) { doMouseClicked(me); } }); } void doMouseClicked(MouseEvent me) { tp=tree.getPathForLocation(me.getX (),me.getY()); if(tp!=null) jtf.setText(tp.toString()); else jtf.setText(""); } }