Implement relational database storage for Java objects Mapping objects into relational databases and vice versa is almost always a hassle. A general solution is difficult because of the inherent differences in the relational and object-oriented approaches to data modeling. Tools…
INDEXHEAD: JavaOne 2000 conference approaching Registration has just started for Sun’s JavaOne Java Developer Conference, which will take place June 6-9 at San Francisco’s Moscone Center. The conference combines hands-on technology development with lectures, tutorials, and discussions. Topics for this…
Improve performance analysis by measuring Java thread CPU time The textbook approach to simple performance analysis is to call System.currentTimeMillis() before and after the code to be measured. This is comparable to using a stopwatch when testing GUI activity, and…
Ezlogin.com adds LiveClips to customized offerings Ezlogin.com has expanded its suite of personalization tools with the addition of LiveClips, a tool that lets Internet users clip content, such as ski reports or news headlines, and post the clips on a…
Automatically capture the context of remotely thrown exceptions through nesting In this brave new world of business computing, multitiered applications based on RMI, or Remote Method Invocation, running across many computers have overrun the realm of the business application, also…
Pull together your JNDI knowledge with a JNDI-enabled application Let’s dive in. I’ve spent the last three months describing the Java Naming and Directory Interface (JNDI). By now, you should feel comfortable with naming and directory services and the operations…
Code maintainable branching logic with the if-then-else framework No one should have to read or maintain code shown in Listing 1 below. Code that includes nested ifs, as in this example, can be a maintenance nightmare. It is usually difficult…
Learn how LDAP and JNDI combine to form a powerful directory and Java object storage facility The Lightweight Directory Access Protocol (LDAP), which traces its roots to the X.500 protocol, was developed in the early 1990s as a standard directories…
How can Java processes communicate without RMI? Q: How can two Java processes (two JVMs) on the same computer interact — that is, read each other’s methods and exchange objects? I’m using RMI, but it seems that a simpler solution…
What is the performance impact of the StringBuffer and String classes? Java provides the StringBuffer and String classes, and the String class is used to manipulate character strings that cannot be changed. Simply stated, objects of type String are read…