摘要:
package com.swing.layerout;import java.awt.BorderLayout;import java.awt.FlowLayout;import java.awt.GridLayout;import java.awt.event.WindowEvent;import java.awt.event.WindowFocusListener;import javax.swing.JButton;import javax.swing.JFrame;import javax.swing.JLabel;public class GridTest extends JFram 阅读全文
摘要:
package com.swing.layerout;import java.awt.FlowLayout;import java.awt.event.WindowEvent;import java.awt.event.WindowFocusListener;import javax.swing.JButton;import javax.swing.JFrame;import javax.swing.JLabel;public class FlowTest extends JFrame{ public FlowTest(){ init(); ... 阅读全文
摘要:
package com.swing.layerout;import java.awt.BorderLayout;import java.awt.CardLayout;import java.awt.FlowLayout;import java.awt.GridLayout;import java.awt.event.ActionEvent;import java.awt.event.ActionListener;import java.awt.event.WindowEvent;import java.awt.event.WindowFocusListener;import javax.swi 阅读全文
摘要:
package com.swing;import java.awt.event.WindowEvent;import java.awt.event.WindowFocusListener;import javax.swing.JFrame;public class TestJFrame extends JFrame{ public TestJFrame(){ init(); } public void init(){ this.setSize(400,300);... 阅读全文
摘要:
SELECT * FROM SCOTT.EMP;--游标cursor:对查询出的结果进行逐行操作的内存指针--隐式游标:在DML,游标自动(打开,操作,关闭)/*SQL%FOUND 如果有行受影响返回trueSQL%NOTFOUND 如果没有行受影响返回trueSQL%ROWCOUNT 返回受影响的行数SQL%ISOPEN 游标是否打开,隐式游标的这个值永远是false*/begin update scott.emp set sal = sal+200 where sal<=800; if SQL%FOUND then dbms_output.put_li... 阅读全文