104 lines
3.5 KiB
Java
104 lines
3.5 KiB
Java
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String class
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public final class StringEx
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{
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public static void main(String[] args)
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{
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String s1 = "java";
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String s2 = "JAVA";
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char charArray[] = { 'b', 'i', 'r', 't', 'h', ' ', 'd', 'a', 'y' };
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byte byteArray[] = { (byte) 'n', (byte) 'e', (byte) 'w', (byte) ' ', (byte) 'y', (byte) 'e', (byte) 'a', (byte) 'r' };
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StringBuffer buffer;
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String s11, s22, s3, s4, s5, s6;
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//comparings
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System.out.println(s1.equals(s2));
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System.out.println(s1.equalsIgnoreCase(s2));
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//concating
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System.out.println(s1.concat(s2));
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//Constructors
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s11 = new String();
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s22 = new String( s1 );
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s3 = new String( charArray );
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s4 = new String( charArray, 6, 3 );
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s5 = new String( byteArray, 4, 4 );
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s6 = new String( byteArray );
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//print hash code for string
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System.out.println(s1.hashCode());
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System.out.println(s2.hashCode());
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//indexOf methods
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System.out.println(s1.indexOf('g'));
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System.out.println(s1.indexOf('a',1));
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System.out.println(s1.indexOf('$'));
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System.out.println(s1.lastIndexOf('a'));
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System.out.println(s1.indexOf("ja"));
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System.out.println(s1.lastIndexOf("ja"));
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//using intern()
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System.out.println(s1.intern());
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System.out.println(s2.intern());
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//length of a string
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System.out.println(s1.length());
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//chatAt of a string
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System.out.println(s1.charAt(1));
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//getChars() method
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char charArrays[] = new char[5];
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s1.getChars(0,5,charArrays,0);
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System.out.println(charArrays);
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//using replace method
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System.out.println(s1.replace('j','J'));
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System.out.println(s1.replaceAll("a","A"));
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//toLower and toUpper case conversion
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System.out.println(s2.toLowerCase());
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System.out.println(s1.toUpperCase());
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//trim() method
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System.out.println(s1.trim());
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//toString()
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System.out.println(s2.toString());
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//toCharArray()
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char charArrays1[] = s1.toCharArray();
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System.out.println(charArrays1);
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//String starts with and ends with
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System.out.println(s1.startsWith("j"));
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System.out.println(s1.endsWith("a"));
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//valueOf() method
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char charAr[] = { 'a', 'b', 'c', 'd', 'e', 'f' };
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boolean b = true;
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char c = 'Z';
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int i = 7;
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long l = 10000000;
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float f = 2.5f;
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double d = 33.333;
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Object o = "hello"; // Assign to an Object reference
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String output;
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output = "char array = " + String.valueOf( charAr ) + "\npart of char array = " +
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String.valueOf( charAr, 3, 3 ) +
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"\nboolean = " + String.valueOf( b ) +
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"\nchar = " + String.valueOf( c ) +
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"\nint = " + String.valueOf( i ) +
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"\nlong = " + String.valueOf( l ) +
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"\nfloat = " + String.valueOf( f ) +
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"\ndouble = " + String.valueOf( d ) +
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"\nObject = " + String.valueOf( o );
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//String substring() method
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System.out.println(s1.substring(2));
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System.out.println(s1.substring(2,5));
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}
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}
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