\u09ac\u09be\u0982\u09b2\u09be\u09df \u09b6\u09bf\u0996\u09c1\u09a8 \u099c\u09be\u09ad\u09be! \u099c\u09be\u09ad\u09be \u09ac\u09cd\u09af\u09be\u09b8\u09bf\u0995
\nMarch 4, 2014<\/p>\n
\u099c\u09be\u09ad\u09be \u09ac\u09be\u0982\u09b2\u09be \u099f\u09bf\u0989\u099f\u09cb\u09b0\u09bf\u09df\u09be\u09b2 \u098f \u09b8\u09cd\u09ac\u09be\u0997\u09a4\u09ae\u0964<\/p>\n
\u0986\u099c\u0995\u09c7 \u0986\u09ae\u09b0\u09be \u099c\u09be\u09ad\u09be\u09b0 \u09a8\u09a4\u09c1\u09a8 \u0986\u09b0\u09cb \u09ab\u09c0\u099a\u09be\u09b0 \u09b8\u09ae\u09cd\u09aa\u09b0\u09cd\u0995\u09c7 \u099c\u09be\u09a8\u09ac\u09cb |<\/p>\n
\u0986\u099c\u0995\u09c7\u09b0 \u099f\u09aa\u09bf\u0995 Array, String \u098f\u09ac\u0982 Vector |<\/p>\n
\u09a4\u09be\u09b9\u09b2\u09c7 \u098f\u0987\u09ac\u09be\u09b0 \u0986\u09b8\u09bf Array, String \u098f\u09ac\u0982 Vector \u0986\u09b8\u09b2\u09c7 \u0995\u09bf\u2026<\/p>\n
Array \u0995\u09c0 ?<\/p>\n
Array \u09b9\u09b2\u09cb \u098f\u09ae\u09a8 \u098f\u0995\u099f\u09bf \u09ad\u09cd\u09af\u09be\u09b0\u09bf\u09df\u09c7\u09ac\u09b2 \u09af\u09c7\u099f\u09bf \u0995\u09a4\u0997\u09c1\u09b2\u09cb \u09a1\u09c7\u099f\u09be\u09b0 \u09b8\u09ae\u09b7\u09cd\u099f\u09bf |\u09b8\u09b9\u099c \u09ad\u09be\u09b7\u09be\u09df , array \u09b9\u09b2 \u098f\u0995\u0987 \u099f\u09be\u0987\u09aa\u09c7\u09b0 \u0995\u09a4\u0997\u09c1\u09b2\u09cb \u09ad\u09cd\u09af\u09be\u09b0\u09bf\u09df\u09c7\u09ac\u09b2\u09c7\u09b0 \u09b8\u09c7\u099f |<\/p>\n
\u099c\u09be\u09ad\u09be\u09a4\u09c7 array \u09a1\u09bf\u0995\u09cd\u09b2\u09c7\u09df\u09be\u09b0 \u0995\u09b0\u09a4\u09c7 \u09b9\u0987 \u099f\u09bf\u0995 \u098f\u0987 \u09ad\u09be\u09ac\u09c7 :<\/p>\n
DataType ArrayName [];<\/p>\n
ArrayName =new DataType [ArraySize];<\/p>\n
Or<\/p>\n
DataType ArrayName []=new DataType [ArraySize];<\/p>\n
Or<\/p>\n
DataType ArrayName []={1,2,3};<\/p>\n
array \u09ae\u09c2\u09b2\u09a4 \u09e9 \u09aa\u09cd\u09b0\u0995\u09be\u09b0 \u09b9\u09df\u09c7 \u09a5\u09be\u0995\u09c7 :
\n\u09e7) One Dimensional
\n\u09e8) Two Dimensional
\n\u09e9) Multi Dimensional<\/p>\n
Two Dimensional:<\/p>\n
DataType ArrayName [][]=new DataType [ArraySize1] [ArraySize2];<\/p>\n
Three dimension or Multi dimension array \u0996\u09c1\u09ac \u0995\u09ae\u0987 use \u09b9\u0987
\n\u09ac\u09c7\u09b6\u09bf use \u09b9\u0987 one and two dimension array<\/p>\n
\u099f\u09bf\u0995 \u0986\u0997\u09c7\u09b0 \u09ae\u09a4\u0987 \u0986\u09ae\u09b0\u09be for loop \u0986\u09b0 array combine kore \u0986\u09ae\u09b0\u09be \u09af\u09cb\u0997 \u0995\u09b0\u09ac
\n\u0995\u09cb\u09a1 :<\/p>\n
public class Method {
\npublic void FORLoopAndArrayProcess(){
\nint sum=0;
\nint a[]=new int[10];
\nfor(int i=1;i<=10;i++)
\n{
\nsum=sum+a[i];
\nSystem.out.println(sum);
\n}
\n}
\n}<\/p>\n
public class Main {
\npublic static void main(String[] args) {
\nMethod m=new Method();
\nm.FORLoopAndArrayProcess();<\/p>\n
}<\/p>\n
}<\/p>\n
\u098f\u0987\u099f\u09be \u09b9\u09b2\u09cb one dimension array \u098f\u09b0 example \u0964
\ntwo dimension array \u0986\u09ae\u09b0\u09be use \u0995\u09b0\u09bf \u09ae\u09cd\u09af\u09be\u099f\u09cd\u09b0\u09bf\u0995\u09cd\u09b8 represent \u0995\u09b0\u09be\u09b0 \u099c\u09a8\u09cd\u09af
\n\u09ae\u09cd\u09af\u09be\u099f\u09cd\u09b0\u09bf\u0995\u09cd\u09b8 represent \u0995\u09b0\u09be\u09b0 \u0995\u09cb\u09a1 :<\/p>\n
\/\/Name : M. Raihan , Khulna University , Bangladesh
\npublic class Method {<\/p>\n
public void FORLoopAndArrayProcess(){<\/p>\n
int a[][]={{1,2,3},{4,5,6},{7,8,9}};
\nfor(int i=0;i<3;i++)
\n{
\nfor(int j=0;j<3;j++){
\nSystem.out.print(a[i][j]+\u201d\\t\u201d);
\n}
\nSystem.out.print(\u201c\\n\u201d);
\n}<\/p>\n
}
\n\/\/Name : M. Raihan , Khulna University , Bangladesh<\/p>\n
public class Main {<\/p>\n
public static void main(String[] args) {
\nMethod m=new Method();<\/p>\n
m.FORLoopAndArrayProcess();<\/p>\n
}<\/p>\n
}<\/p>\n
Array \u0986\u09aa\u09be\u09a4\u09a4 \u098f\u0987\u099f\u09c1\u0995\u09c1\u0987 \u09aa\u09b0\u09c7 \u0986\u09b0\u09cb \u0985\u09cd\u09af\u09be\u09a1\u09ad\u09be\u09a8\u09cd\u09b8 \u09ab\u09c0\u099a\u09be\u09b0 \u09aa\u09b0\u09c7 \u09a6\u09c7\u0996\u09ac |<\/p>\n
\u098f\u0996\u09a8 \u0986\u09b8\u09be \u09af\u09be\u0995 String \u0995\u09c0 ?
\n\u09b8\u09cd\u099f\u09cd\u09b0\u09bf\u0982 \u09b9\u09b2 \u0995\u09a4\u0997\u09c1\u09b2\u09cb character \u098f\u09b0 \u09b8\u09ae\u09b7\u09cd\u099f\u09bf \u0985\u09b0\u09cd\u09a5\u09be\u09ce \u09b8\u09cd\u099f\u09cd\u09b0\u09bf\u0982 \u09b9\u09b2 characters \u098f\u09b0 \u09b8\u09c7\u099f<\/p>\n
\u09b8\u09cd\u099f\u09cd\u09b0\u09bf\u0982 \u09a1\u09bf\u0995\u09cd\u09b2\u09c7\u09df\u09be\u09b0 :<\/p>\n
String name;<\/p>\n
name=new String(\u201cThis is java String\u201d);<\/p>\n
\u098f\u0987\u0996\u09be\u09a8\u09c7 \u0996\u09c7\u09df\u09be\u09b2 \u0995\u09b0\u09b2\u09c7 \u09a6\u09c7\u0995\u09a4\u09c7 \u09aa\u09be\u09ac\u09be \u099c this ,is ,java \u098f\u0987 \u09b8\u09ac \u0997\u09c1\u09b2\u09bf \u098f\u0995 \u098f\u0995\u099f\u09bf character \u0986\u09b0 \u098f\u0987 \u0997\u09c1\u09b2\u09cb\u09b0 \u09b8\u09ae\u09b7\u09cd\u099f\u09bf \u09b0\u09c2\u09aa\u0987 \u09b9\u09b2\u09cb \u09b8\u09c7\u0987 \u09b8\u09cd\u099f\u09cd\u09b0\u09bf\u0982<\/p>\n
\u09b8\u09cd\u099f\u09cd\u09b0\u09bf\u0982 \u098f\u09b0 \u0985\u09a8\u09c7\u0995 built in \u09ae\u09c7\u09a5\u09a1 \u0986\u09b8\u09c7 \u0964 \u09a8\u09bf\u099a\u09c7\u09b0 \u098f\u0987 \u09b2\u09bf\u0982\u0995 \u098f \u0995\u09cd\u09b2\u09bf\u0995 \u0995\u09b0\u09b2\u09c7 built in \u09ae\u09c7\u09a5\u09a1 \u0997\u09c1\u09b2\u09cb\u09b0 \u099a\u09be\u09b0\u09cd\u099f \u09a6\u09c7\u0996\u09a4\u09c7
\n\u09aa\u09be\u0993\u09df\u09be \u09af\u09be\u09ac\u09c7<\/p>\n
string1<\/p>\n
\u0995\u09cb\u09a1\u09bf\u0982 example :<\/p>\n
\/\/Name : M. Raihan , Khulna University , Bangladesh
\npublic class Method {<\/p>\n
public void StringProcess(){<\/p>\n
String s1 = \u201cJavaString\u201d;
\nSystem.out.println(\u201cS1 = \u201d + s1);
\nint length = s1.length();
\nSystem.out.println(\u201cS1 lenth = \u201d + length);
\nSystem.out.println(\u201cS1 lowercase = \u201d + s1.toLowerCase());
\nSystem.out.println(\u201cS1 uppercase = \u201d + s1.toUpperCase());
\nSystem.out.println(\u201cS1 replace a with z = \u201d + s1.replace(\u2018a\u2019,\u2019z\u2019));
\nSystem.out.println(\u201cS1 indexOf(\u2018e\u2019)= \u201d + s1.indexOf(\u2018e\u2019));
\nSystem.out.println(\u201cS1 lastindexof(\u2018e\u2019) = \u201d + s1.lastIndexOf(\u2018e\u2019));
\nString s2 = \u201cExamples\u201d;
\nSystem.out.println(\u201cS2 = \u201d + s2);
\nSystem.out.println(\u201cS1 and S2 trim = \u201d + s1.trim() + s2.trim());
\nSystem.out.println(\u201cS1 and S2 equals = \u201d + s1.equals(s2));
\nSystem.out.println(\u201cS1 and S2 equals ignoring case = \u201d + s1.equalsIgnoreCase(s2));
\nSystem.out.println(\u201cS1 and S2 compareTo = \u201d + s1.compareTo(s2));
\nSystem.out.println(\u201cS1 and S2 concate = \u201d + s1.concat(s2));
\nSystem.out.println(\u201cS1 substring(n) = \u201d + s1.substring(5));
\nSystem.out.println(\u201cS1 substring(n,m) = \u201d + s1.substring(5,8));
\nSystem.out.println(\u201cS1 toString() = \u201d + s1.toString());
\nint i = 100;
\nSystem.out.println(\u201cS1.valueOf(variable) = \u201d + (s1.valueOf(i)).length()); \/\/ converts the parameter to string
\nSystem.out.println(\u201cStart with \u201d + s1.startsWith(\u201cP\u201d));
\nSystem.out.println(\u201cStart with \u201d + s1.endsWith(\u201cy\u201d));<\/p>\n
}
\n}
\n\/\/Name : M. Raihan , Khulna University , Bangladesh<\/p>\n
public class Main {<\/p>\n
public static void main(String[] args) {
\nMethod m=new Method();<\/p>\n
m.StringProcess();
\n}<\/p>\n
}<\/p>\n
Beginner \u09a6\u09c7\u09b0 \u09b8\u09cd\u099f\u09cd\u09b0\u09bf\u0982 \u09b8\u09ae\u09cd\u09aa\u09b0\u09cd\u0995\u09c7 \u0986\u09aa\u09be\u09a4\u09a4 \u098f\u0987\u099f\u09c1\u0995\u09c1 \u099c\u09be\u09a8\u09b2\u09c7\u0987 \u09b9\u09ac\u09c7 \u0964<\/p>\n
\u098f\u0996\u09a8 \u0986\u09b8\u09be \u09af\u09be\u0995 \u09ad\u09c7\u0995\u09cd\u099f\u09b0 (Vector ) \u0986\u09b8\u09b2\u09c7 \u0995\u09bf ?
\n\u09a8\u09be \u098f\u0987\u099f\u09bf \u0995\u09bf\u09a8\u09cd\u09a4\u09c1 math \u098f\u09b0 \u09ad\u09c7\u0995\u09cd\u099f\u09b0 \u09a8\u09be , \u098f\u099f\u09be \u09b8\u09ae\u09cd\u09aa\u09c2\u09b0\u09cd\u09a3 \u0986\u09b2\u09be\u09a6\u09be \u0964
\n\u09ad\u09c7\u0995\u09cd\u099f\u09b0 :<\/p>\n
\u0986\u09ae\u09b0\u09be \u099c\u09be\u09a8\u09bf array \u098f\u0995\u099f\u09be size \u09a1\u09bf\u0995\u09cd\u09b2\u09c7\u09df\u09be\u09b0 \u0995\u09b0\u09be \u09b2\u09be\u0997\u09c7 \u0995\u09bf\u09a8\u09cd\u09a4\u09c1 \u0995\u0996\u09a8\u09cb \u09af\u09a6\u09bf \u0986\u09ae\u09be\u09a6\u09c7\u09b0 \u098f\u0987 \u09b0\u0995\u09ae situation \u0986\u09b8\u09c7 \u09af\u09c7
\n\u0986\u09ae\u09be\u09a6\u09c7\u09b0\u0995\u09c7 \u09a8\u09bf\u09b0\u09cd\u09a7\u09be\u09b0\u09bf\u09a4 array \u09a6\u09bf\u09df\u09c7 \u0995\u09be\u099c \u09b9\u09a4\u09cd\u099b\u09c7 \u09a4\u0996\u09a8 \u0986\u09ae\u09b0\u09be \u09ad\u09c7\u0995\u09cd\u099f\u09b0 use \u0995\u09b0\u09bf \u0964
\n\u0985\u09b0\u09cd\u09a5\u09be\u09ce \u09ad\u09c7\u0995\u09cd\u099f\u09b0 \u09b9\u09b2\u09cb \u098f\u0995\u099f\u09bf Dynamic Array \u0964 \u098f\u09b0 \u0995\u09cb\u09a8\u09cb size \u09ab\u09bf\u0995\u09cd\u09b8\u09a1 \u09a8\u09be \u0986\u09ae\u09b0\u09be \u09b8\u09c1\u09ac\u09bf\u09a7\u09be \u0985\u09a8\u09c1\u09b8\u09be\u09b0\u09c7 \u098f\u099f\u09be\u0995\u09c7 use \u0995\u09b0\u09a4\u09c7
\n\u09aa\u09be\u09b0\u09ac<\/p>\n
\u09ad\u09c7\u0995\u09cd\u099f\u09b0 java.util.* \u098f\u0987 package \u098f\u09b0 \u0986\u0993\u09a4\u09be\u09ad\u09c1\u0995\u09cd\u09a4 \u0964 package \u09b8\u09ae\u09cd\u09aa\u09b0\u09cd\u0995\u09c7 \u09a8\u09c7\u0995\u09cd\u09b8\u099f \u099f\u09bf\u0989\u099f\u09cb\u09b0\u09bf\u09df\u09be\u09b2 \u098f \u0986\u09ae\u09b0\u09be \u099c\u09be\u09a8\u09ac \u0964<\/p>\n
\u09b8\u09cd\u099f\u09cd\u09b0\u09bf\u0982 \u098f\u09b0 \u09ae\u09a4 \u09ad\u09c7\u0995\u09cd\u099f\u09b0 \u098f\u09b0\u0993 \u0995\u09bf\u099b\u09c1 built in \u09ae\u09c7\u09a5\u09a1 \u0986\u099b\u09c7
\n\u09a8\u09bf\u099a\u09c7\u09b0 \u09b2\u09bf\u0982\u0995 \u098f \u0995\u09bf\u099b\u09c1 \u09ae\u09c7\u09a5\u09a1 \u09a6\u09be\u0993\u09df\u09be \u09b9\u09b2\u09cb :<\/p>\n
import java.util.*;
\n\/\/Name : M. Raihan , Khulna University , Bangladesh
\npublic class Method {<\/p>\n
public void VectorProcess(){<\/p>\n
\/\/ initial size is 3, increment is 2
\nVector v = new Vector(3, 2);
\nSystem.out.println(\u201cInitial size: \u201d + v.size());
\nSystem.out.println(\u201cInitial capacity: \u201d +
\nv.capacity());
\nv.addElement(new Integer(1));
\nv.addElement(new Integer(2));
\nv.addElement(new Integer(3));
\nv.addElement(new Integer(4));
\nSystem.out.println(\u201cCapacity after four additions: \u201d +
\nv.capacity());<\/p>\n
v.addElement(new Double(5.5));
\nSystem.out.println(\u201cCurrent capacity: \u201d +
\nv.capacity());
\nv.addElement(new Double(6.8));
\nv.addElement(new Integer(7));
\nSystem.out.println(\u201cCurrent capacity: \u201d +
\nv.capacity());
\nv.addElement(new Float(9.4));
\nv.addElement(new Integer(10));
\nSystem.out.println(\u201cCurrent capacity: \u201d +
\nv.capacity());
\nv.addElement(new Integer(11));
\nv.addElement(new Integer(12));
\nSystem.out.println(\u201cFirst element: \u201d +
\n(Integer)v.firstElement());
\nSystem.out.println(\u201cLast element: \u201d +
\n(Integer)v.lastElement());
\nif(v.contains(new Integer(3)))
\nSystem.out.println(\u201cVector contains 3.\u201d);
\n\/\/ enumerate the elements in the vector.
\nEnumeration vEnum = v.elements();
\nSystem.out.println(\u201c\\nElements in vector:\u201d);
\nwhile(vEnum.hasMoreElements())
\nSystem.out.print(vEnum.nextElement() + \u201d \u201c);
\nSystem.out.println();<\/p>\n
}
\n}<\/p>\n
\/\/Name : M. Raihan , Khulna University , Bangladesh<\/p>\n
public class Main {<\/p>\n
public static void main(String[] args) {
\nMethod m=new Method();<\/p>\n
m.VectorProcess();<\/p>\n
}<\/p>\n
}<\/p>\n
\u0986\u09b6\u09be \u0995\u09b0\u09bf \u0986\u099c\u0995\u09c7 \u09a4\u09cb\u09ae\u09b0\u09be \u09a8\u09a4\u09c1\u09a8 \u0995\u09bf\u099b\u09c1 \u09b6\u09bf\u0996\u09b2\u09c7 ,\u09a8\u09c7\u0995\u09cd\u09b8\u099f \u099f\u09bf\u0989\u099f\u09cb\u09b0\u09bf\u09df\u09be\u09b2\u09c7 \u0986\u09b0\u09cb \u09a8\u09a4\u09c1\u09a8 \u0995\u09bf\u099b\u09c1 \u0986\u09ae\u09b0\u09be \u09b6\u09bf\u0996\u09ac<\/p>\n
\u0986\u099c\u0995\u09c7 \u0986\u09b0 \u09a8\u09be \u09a8\u09c7\u0995\u09cd\u09b8\u099f \u099f\u09bf\u0989\u099f\u09cb\u09b0\u09bf\u09df\u09be\u09b2 \u09a6\u09c7\u0993\u09af\u09be\u09b0 \u0986\u0997\u09c7 \u098f\u0987 \u0997\u09c1\u09b2\u09cb practice \u0995\u09b0 \u09a4\u09be \u09a8\u09be\u09b9\u09b2\u09c7 \u09aa\u09b0\u09c7
\n\u0985\u09a8\u09c7\u0995 \u099c\u09bf\u09a8\u09bf\u09b8 \u09ac\u09c1\u099c\u09ac\u09be \u09a8\u09be \u0964
\n\u09b8\u09ac\u09be\u0987 \u09ad\u09be\u09b2\u09cb \u09a5\u09c7\u0995\u09cb \u0986\u09b0 \u0986\u09ae\u09be\u09b0 \u099c\u09a8\u09cd\u09af \u09a6\u09cb\u09df\u09be \u0995\u09b0\u09cb \u09af\u09be\u09a4\u09c7 \u09a8\u09c7\u0995\u09cd\u09b8\u099f \u099f\u09bf\u0989\u099f\u09cb\u09b0\u09bf\u09df\u09be\u09b2 \u09b8\u09ae\u09df \u09ae\u09a4 \u09a6\u09bf\u09a4\u09c7 \u09aa\u09be\u09b0\u09bf<\/p>\n","protected":false},"excerpt":{"rendered":"
\u09ac\u09be\u0982\u09b2\u09be\u09df \u09b6\u09bf\u0996\u09c1\u09a8 \u099c\u09be\u09ad\u09be! \u099c\u09be\u09ad\u09be \u09ac\u09cd\u09af\u09be\u09b8\u09bf\u0995 March 4, 2014 \u099c\u09be\u09ad\u09be \u09ac\u09be\u0982\u09b2\u09be \u099f\u09bf\u0989\u099f\u09cb\u09b0\u09bf\u09df\u09be\u09b2 \u098f \u09b8\u09cd\u09ac\u09be\u0997\u09a4\u09ae\u0964 \u0986\u099c\u0995\u09c7 \u0986\u09ae\u09b0\u09be \u099c\u09be\u09ad\u09be\u09b0 \u09a8\u09a4\u09c1\u09a8 \u0986\u09b0\u09cb \u09ab\u09c0\u099a\u09be\u09b0 \u09b8\u09ae\u09cd\u09aa\u09b0\u09cd\u0995\u09c7 \u099c\u09be\u09a8\u09ac\u09cb | \u0986\u099c\u0995\u09c7\u09b0 \u099f\u09aa\u09bf\u0995 Array, String \u098f\u09ac\u0982 Vector | \u09a4\u09be\u09b9\u09b2\u09c7 \u098f\u0987\u09ac\u09be\u09b0 \u0986\u09b8\u09bf Array, String \u098f\u09ac\u0982 Vector \u0986\u09b8\u09b2\u09c7 \u0995\u09bf\u2026 Array \u0995\u09c0 ? Array \u09b9\u09b2\u09cb \u098f\u09ae\u09a8 \u098f\u0995\u099f\u09bf \u09ad\u09cd\u09af\u09be\u09b0\u09bf\u09df\u09c7\u09ac\u09b2 \u09af\u09c7\u099f\u09bf \u0995\u09a4\u0997\u09c1\u09b2\u09cb \u09a1\u09c7\u099f\u09be\u09b0 \u09b8\u09ae\u09b7\u09cd\u099f\u09bf |\u09b8\u09b9\u099c \u09ad\u09be\u09b7\u09be\u09df , array \u09b9\u09b2 … <\/p>\n