contoh koneksi ke oracle dgn java via odbc

import java.sql.*;

class ConODBCOracle{
public static void main(String[] args){
try
{
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
Connection con=DriverManager.getConnection("jdbc:odbc:OdbcOracle","SYSMAN","admin");
con.close();
System.out.println("Koneksi ke Database Oracle via ODBC berhasil..!!!");
System.exit(0);
}
catch(ClassNotFoundException eclass){
System.out.println("Driver tidak ada");
}
catch(SQLException esql){
System.out.println(esql.getMessage());
}
}
}

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contoh koneksi ke my. sql dgn java via odbc

import java.sql.*;

class ConOdbcMySQL {
public static void main(String[] args) {
try
{
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
Connection con=DriverManager.getConnection("jdbc:odbc:ConnectMySQL","root","");
con.close();
System.out.println("Koneksi ke Server MySQL via ODBC berhasil....!!!");
System.exit(0);
}
catch(ClassNotFoundException eclass) {
System.out.println("Driver tidak ada");
}
catch(SQLException esql){
System.out.println(esql.getMessage());
}
}
}

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contoh koneksi ke oracle dgn java

import java.sql.*;

class ConnectOracle{
public static void main(String[] args){
try
{
Class.forName("oracle.jdbc.driver.OracleDriver");
Connection con=DriverManager.getConnection("jdbc:oracle:thin:@SERVER:1521:orcl","SYSMAN","admin");
con.close();
System.out.println("Koneksi ke Server Oracle berhasil..!!!");
System.exit(0);
}
catch(ClassNotFoundException eclass){
System.out.println("Driver tidak ada");
}
catch(SQLException esql){
System.out.println(esql.getMessage());
}
}
}

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contoh koneksi ke my. sql dgn java

import java.sql.*;

class ConnectMySQL {
public static void main(String[] args) {
try
{
Class.forName("com.mysql.jdbc.Driver");
Connection con=DriverManager.getConnection("jdbc:mysql://SERVER/BookStore", "root","admin");
con.close();
System.out.println("Koneksi ke MySQL Server berhasil..!!!");
System.exit(0);
}
catch(ClassNotFoundException eclass) {
System.out.println("Driver tidak ada");
}

catch(SQLException esql) {
System.out.println(esql.getMessage());
}
}
}
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contoh polymorfisme di java

class ViewData {
public void tulis(int x) {
System.out.println(x);
}

public void tulis(double x) {
System.out.println(x);
}

public void tulis(char x) {
System.out.println(x);
}

public void tulis(String x) {
System.out.println(x);
}
}

class contoh_polimorfisme {
public static void main(String[] args) {
ViewData data = new ViewData();
data.tulis("MOHRIYAN");
data.tulis('R');
data.tulis(11);
data.tulis(3.14);
}
}

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contoh inheritance di java

class PERSEGI {
protected double panjang, lebar;
public PERSEGI() {
setPL(1,1);
}

public PERSEGI(double p, double l) {
if (p>0 && l>0) {
panjang = p; lebar = l;
} else {
panjang = 2.0; lebar = 1.0;
}
}

public void setPL(double p, double l) {
if (p>0 && l>0) {
panjang = p; lebar = l;
}
}
public double getPanjang() {
return panjang;
}

public double getLebar() {
return lebar;
}

public double hitungLuas() {
return (panjang * lebar);
}

public double hitungKel () {
return (2 * (panjang+lebar));
}
}

class BALOK extends PERSEGI {
private double tinggi;

public BALOK() {
setPL(1,1);
setTinggi(1);
}

public BALOK(double p, double l, double t) {
setPL(p,l);
setTinggi(t);
}

public void setTinggi(double t) {
if (t>0) tinggi = t;
}

public double getTinggi() {
return (tinggi);
}

public double hitungLuas() {
return (super.hitungLuas() * 4.0 +
super.getLebar() * tinggi * 2.0);
}

public double hitungVol() {
return (super.hitungLuas() * tinggi);
}
}

class contoh_inheritance {
public static void main(String[] args) {
PERSEGI X = new PERSEGI(4.5, 3.5);
System.out.println("DESKRIPSI PERSEGI X");
System.out.println("PANJANG : " + X.getPanjang() + " meter");
System.out.println("LEBAR : " + X.getLebar() + " meter");
System.out.println("LUAS : " + X.hitungLuas() + " meter persegi");
System.out.println("KELILING : " + X.hitungKel() + " meter");
System.out.println("");

double p=X.getPanjang(), l=X.getLebar();
BALOK A = new BALOK(p, l, 3.0);

System.out.println("DESKRIPSI BALOK A");
System.out.println("PANJANG : " + A.getPanjang() + " meter");
System.out.println("LEBAR : " + A.getLebar() + " meter");
System.out.println("TINGGI : " + A.getTinggi() + " meter");
System.out.println("LUAS : " + A.hitungLuas() + " meter persegi");
System.out.println("VOLUME : " + A.hitungVol() + " meter kubik");
}
}

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contoh struktur while di java

class contoh_while {
public static void main(String[] x){
int batas = 6;
int i = 6, hasil =0;
while(i hasil+=i;
i++;
};
System.out.println("Total hasil = "+hasil);
}
} Selengkapnya...

contoh penggunaan try catch di java

try catch ini biasanya digunakan sebagai error handling dalam suatu program

class contoh_try_catch_finally {
public static void main(String[] x) {
int bukan_nol = 8, nol = 0;
try {
int hasil = bukan_nol/nol;
System.out.println("Hasil = "+hasil);
} catch(ArithmeticException e)
{
System.out.println("Proses dihentikan,
pembagi = 0");
}finally {
System.out.println("Selesai...");
}
}
}
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contoh penggunaan throw di java

class contoh_throw {
public static void main(String[] x) throws Exception {
try {
throw new Exception ("Hasil tidak terdefinisikan!");
}catch(Exception e) {
System.out.println("Proses dihentikan, pembagi=0");
throw e;
}
}
}
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contoh struktur switch case di java

class contoh_switch_case {
public static void main(String[] x) {
char nilai = 'A';
switch (nilai) {
case 'E' : System.out.println("Nilai Anda Sangat Buruk");
break;
case 'D' : System.out.println("Nilai Anda Buruk");
break;
case 'C' : System.out.println("Nilai Anda Cukup");
break;
case 'B' : System.out.println("Nilai Anda Baik");
break;
case 'A' : System.out.println("Nilai Anda sangat Baik");
break;
default : System.out.println("Nilai Anda Kosong");
break;
}
}
}
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contoh struktur if else di java

class contoh_if_else {
public static void main(String[] x){
int pembagi = 0;
if (pembagi != 0) {
System.out.println("Operasi pembagian bisa dilakukan !");
} else {
System.out.println("Operasi pembagian tidak bisa dilakukan !");
}
}
}

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contoh for di java

class contoh_for {
public static void main(String[] x) {
for (int i=0; i<=10; i++){
if (i%2==1) System.out.println(i);
}
}
}

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contoh do while di java

class contoh_do_while{
public static void main(String[] x){
int batas = 6;
int i = 6, hasil =0;
do {
hasil+=i;
i++;
}while(i<=batas);
System.out.println("Total hasil = "+hasil);
}
}

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