69 lines
1.8 KiB
Java
69 lines
1.8 KiB
Java
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StringBuffer class
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public class StringBufferAppend
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{
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public static void main( String args[] )
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{
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Object o = "hello";
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String s = "good bye";
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char charArray[] = { '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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StringBuffer buf = new StringBuffer();
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buf.append( o );
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buf.append( " " );
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buf.append( s );
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buf.append( " " );
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buf.append( charArray );
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buf.append( " " );
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buf.append( charArray, 0, 3 );
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buf.append( " " );
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buf.append( b );
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buf.append( " " );
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buf.append( c );
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buf.append( " " );
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buf.append( i );
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buf.append( " " );
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buf.append( l );
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buf.append( " " );
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buf.append( f );
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buf.append( " " );
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buf.append( d );
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//capacity
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buf.ensureCapacity( 75 );
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buf.capacity();
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//length
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buf.setLength( 10 );
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buf.length();
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//char methods
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char charArr[] = new char[ buf.length() ];
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buf.getChars( 0, buf.length(), charArr, 0 );
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buf.setCharAt( 0, 'H' );
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buf.setCharAt( 6, 'T' );
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//reverse
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buf.reverse();
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//constructors
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StringBuffer buf1, buf2, buf3;
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buf1 = new StringBuffer();
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buf2 = new StringBuffer( 10 );
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buf3 = new StringBuffer( "hello" );
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//insert and delete
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buf.insert( 0, o );
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buf.insert( 0, " " );
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buf.deleteCharAt( 10 ); // delete 5 in 2.5
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buf.delete( 2, 6 ); // delete .333 in 33.333
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}
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}
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