1.user defined packages
2.predefined packages
The supermost package of Java is the "java" package.
core java ,jse.advanced jse,jee and j2me
A default package is a package with no name. You can create a Java class without putting package name on top of the code. This class is included in the "default package". Be careful not to be confused with java.lang, which is a package that contains Java's fundamental classes and get's imported by default.
The java.lang package is automatically imported for you.
The java.lang package in Java is automatically imported for you.
The supermost package of Java is the "java" package.
The import keyword in Java is used to tell the Java compiler where to find different classes and packages.java.util.Date is the location of the Date class: Date is a member of the util package, which is a member of the java package.
a package
c, c++, java
The Java 'this' installation package allows one to create installation programs for their Java based applications. One can download the program from Java.
core java ,jse.advanced jse,jee and j2me
The different types of operators in Java are:Assignment OperatorsRelational OperatorsArithmetic OperatorsLogical Operators
Core Java and J2SE are the same thing, which is the set of classes to be found in the rt.jar package. The classes were just given different names at different stages of the continued revisions to the Java Runtime Environment.
A default package is a package with no name. You can create a Java class without putting package name on top of the code. This class is included in the "default package". Be careful not to be confused with java.lang, which is a package that contains Java's fundamental classes and get's imported by default.
The java.lang package is automatically imported for you.
The java.lang package in Java is automatically imported for you.
A user defined package is a package outside of the standard Java libraries.