public class
StringConstructor {
public static void main (String args[]){
char arr[ ] = { ‘x’, ‘y’,
‘z’};
String st = new String ( arr );
System.out.println(st);
}
}
public class Arith
{
String fname =“TSPC”;
String lname = “TSGI”;
void show(){
System.out.println(“The full name is “+fname+ ” “ +lname);
}
public static void main(String[] args) {
// TODO Auto-generated method stub
Arith
a1 = new Arith();
a1.show();
}
}
public class buf {
/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
String
foo = “foo”;
String
s = “abc” + foo + “def” + Integer.toString(47);
System.out.println(s);
//The
equivalent using StringBuffer;
StringBuffer
sb = new StringBuffer(“abc”); // Creates String;
sb.append(foo);
sb.append(“def”); //Creates a string
sb.append(Integer.toString(47));
System.out.println(sb);
}
}
public class
equaldemo {
/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
String
s1 = “Hello”;
String
s2 = “Hello”;
String
s3 = “Good bye”;
String
s4 = “HELLO”;
System.out.println(s1+ “equals” +s2+ “is”
+s1.equals(s2));
System.out.println(s1+ “equals” +s3+ “is”
+s1.equals(s3));
System.out.println(s1+ “equals” +s4+ “is”
+s1.equals(s4));
}
}
public class hash
{
/**
* @param args, class name cant be Hash, because ists
predefined name of class
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
String s1 = “hello”;
String s2 = “Hello”;
System.out.println(“Tha hash code for”+s1+ “is” +s1.hashCode());
System.out.println(“The hash code for”+s2+ “is” +s2.hashCode());
}
}
public class st {
/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
String s = “Now is the time for all good men” + “to come to the aid of their
country” + “and
pay their taxes”;
String s1 = “Hello World”;
String s2 = “Hello”;
String s3 = “HELLO”;
System.out.println(“Index of t = “
+s.indexOf(‘t’));
System.out.println(“last index of t = “ +s.lastIndexOf(‘t’));
System.out.println(“index of (t,10) =” +s.indexOf(‘t’,10)) ;
System.out.println(“last index of (t,60)=” +s.lastIndexOf(‘t’, 60));
System.out.println(s1.substring(6));
System.out.println(s1.substring(3,
8));
System.out.println(s2.concat(“World”));
System.out.println(s2.replace(‘l’, ‘w’));
System.out.println(s3.toLowerCase());
System.out.println(s1.trim());
}
}