#Java - Code Snippets for '#Classes'

#Java - Code Snippets for '#Classes' - 7 code snippet(s) found

Sample 1. Class Nested within Interface / Static Inner class within Interface

public interface SampleInterface {

   public int sampleMethod(List sampleList);



   static class Impl implements SampleInterface {



      @Override

      public int sampleMethod(List sampleList) {

         return 0;

      }

   }

}

_{Like Feedback nested classes nested class inner class inner classes static inner class static inner class within interface @override}

Sample 2. Declaring Abstract Class

public abstract class TestClass {

   public static void main(String[] args){

      }

}

_{Like Feedback abstract classes main method declaration main method}

Sample 3. Class bean with getter , setter and constructor

public class Employee {

   public String name;

   public int age;

   public int salary;



   Employee(String name, int age, int salary) {

      this.name = name;

      this.age = age;

      this.salary = salary;

   }



   public String getName() {

      return name;

   }



   public void setName(String name) {

      this.name = name;

   }



   public int getAge() {

      return age;

   }



   public void setAge(int age) {

      this.age = age;

   }



   public int getSalary() {

      return salary;

   }



   public void setSalary(int salary) {

      this.salary = salary;

   }

}

_{Like Feedback bean pojo plain java objects getters setters getters nd setters classes class constructor parameterized constructor this keyword}

Sample 4. Database Api using java.sql classes

package BuggyBread;



import java.sql.Connection;

import java.sql.DriverManager;

import java.sql.SQLException;



public class DatabaseAPI {



   // JDBC driver name and database URL

   static final String JDBC_DRIVER = "com.mysql.jdbc.Driver";

   static final String DB_URL = "";



   // Database credentials

   static final String USER = "";

   static final String PASS = "";



   Connection conn = null;

   

   public void initializeConnection(){

      try {

         // STEP 2: Register JDBC driver

         Class.forName("com.mysql.jdbc.Driver");



         // STEP 3: Open a connection

         System.out.println("Connecting to database...");

         conn = DriverManager.getConnection(DB_URL, USER, PASS);



         conn.close();

      } catch (SQLException se) {

         // Handle errors for JDBC

         se.printStackTrace();

      } catch (Exception e) {

         // Handle errors for Class.forName

         e.printStackTrace();

      } finally {

          

         try {

            if (conn != null)

               conn.close();

         } catch (SQLException se) {

            se.printStackTrace();

         }// end finally try

      }// end try

   

   }

}

_{Like Feedback database api java.sql}

Sample 5. Get the properties of class (i.e package name , interfaces , subclasses etc ) using ClassUtils( Apache Commons )

Class class1 = ClassUtils.getClass("BuggyBreadTest"); 

System.out.println(ClassUtils.getPackageName(class1));

System.out.println(ClassUtils.getAllInterfaces(class1));

_{Like Feedback ClassUtils Apache Commons Get Class Properties java.lang.Class}

Sample 6. Code Sample / Example / Snippet of org.apache.bcel.generic.ClassElementValueGen

    public void testCreateClassElementValue() throws Exception

    {

        final ClassGen cg = createClassGen("HelloWorld");

        final ConstantPoolGen cp = cg.getConstantPool();

        final ObjectType classType = new ObjectType("java.lang.Integer");

        final ClassElementValueGen evg = new ClassElementValueGen(classType, cp);

        assertTrue("Unexpected value for contained class: '"

                + evg.getClassString() + "'", evg.getClassString().contains("Integer"));

        checkSerialize(evg, cp);

    }

_{Like Feedback org.apache.bcel.generic.ClassElementValueGen}

Sample 7. Code Sample / Example / Snippet of org.apache.bcel.classfile.InnerClasses

public Attribute copy(final ConstantPool _constant_pool) {

 final InnerClasses c = (InnerClasses) clone();

 c.inner_classes = new InnerClass[inner_classes.length];

 for (int i = 0; i < inner_classes.length; i++) {

  c.inner_classes[i] = inner_classes[i].copy();

 }

 c.setConstantPool(_constant_pool);

 return c;

}

_{Like Feedback org.apache.bcel.classfile.InnerClasses object initialization using clone}

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