34 lines
602 B
Java
34 lines
602 B
Java
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Null Reference
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import com.ack.learning.examples.account.Account;
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public class NullReference {
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public static void main( String[] args ) {
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// unitialised variables
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String x;
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Account y;
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/**
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* this is an error because x is unitialised
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if( x == null )
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{
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}
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*/
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// initialised variables
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String hsbc = null;
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Account account = null;
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// object arrays are initialised to null
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String[] names = new String[5];
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for( int i = 0; i < names.length; i++ ) {
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System.out.println( names[i] );
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}
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}
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}
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