/**
 * The HelloWorldApp class implements an application that
 * simply prints "Hello World!" to standard output.
 */

class HelloWorldApp {

	public static void main(String[] args) {
		System.out.println("Hello Worlld");
	}

}

class ArrayDemo {
    public static void main(String[] args) {
        // declares an array of integers
        int[] anArray;
        int[] theArray;

        // allocates memory for 10 integers
        anArray = new int[10];
        theArray = new int[30];
           
        // initialize first element
        anArray[0] = 100;
        // initialize second element
        anArray[1] = 200;
        // and so forth
        anArray[2] = 300;
        anArray[3] = 400;
        anArray[4] = 500;
        anArray[5] = 600;
        anArray[6] = 700;
        anArray[7] = 800;
        anArray[8] = 900;
        anArray[9] = 1000;

        System.out.println("Element at index 0: "
                           + anArray[0]);
        System.out.println("Element at index 1: "
                           + anArray[1]);
        System.out.println("Element at index 2: "
                           + anArray[2]);
        System.out.println("Element at index 3: "
                           + anArray[3]);
        System.out.println("Element at index 4: "
                           + anArray[4]);
        System.out.println("Element at index 5: "
                           + anArray[5]);
        System.out.println("Element at index 6: "
                           + anArray[6]);
        System.out.println("Element at index 7: "
                           + anArray[7]);
        System.out.println("Element at index 8: "
                           + anArray[8]);
        System.out.println("Element at index 9: "
                           + anArray[9]);
        
        
        byte[] anArrayOfBytes;
        short[] anArrayOfShorts;
        long[] anArrayOfLongs;
        float[] anArrayOfFloats;
        double[] anArrayOfDoubles;
        boolean[] anArrayOfBooleans;
        char[] anArrayOfChars;
       
        		
        		
    }
} 


/*class ArrayCopyDemo {
    public static void main(String[] args) {
        char[] copyFrom = { 'd', 'e', 'c', 'a', 'f', 'f', 'e',
			    'i', 'n', 'a', 't', 'e', 'd' };
        char[] copyTo = new char[7];

        System.arraycopy(copyFrom, 2, copyTo, 0, 7);
        System.out.println(new String(copyTo));
    }
}
*/

class ArrayCopyDemo {
	
	public static void main(String[] args) {
		char[] copyFrom = {'a','b','c','d','e','f'};
		char[] copyTo = new char[10];
		
		System.arraycopy(copyFrom, 0, copyTo, 1,3);
		System.out.println(new String(copyTo));
	}
}



/*
class ArrayCopyOfDemo {
    public static void main(String[] args) {        
        char[] copyFrom = {'d', 'e', 'c', 'a', 'f', 'f', 'e',
            'i', 'n', 'a', 't', 'e', 'd'};
            
        char[] copyTo = java.util.Arrays.copyOfRange(copyFrom, 2, 9);
        
        System.out.println(new String(copyTo));
    }
}*/


class ArrayCopyOfDemo {
	public static void main (String[] args) {
		char[] copyFrom = {'d', 'e', 'c', 'a', 'f', 'f', 'e',
	            'i', 'n', 'a', 't', 'e', 'd'};
		
		char[] copyTo = java.util.Arrays.copyOfRange(copyFrom, 2, 7); 
		System.out.println(copyTo);
		
	}
}



/*
class MultiDimArrayDemo {
    public static void main(String[] args) {
        String[][] names = {
            {"Mr. ", "Mrs. ", "Ms. "},
            {"Smith", "Jones"}
        };
        // Mr. Smith
        System.out.println(names[0][0] + names[1][0]);
        // Ms. Jones
        System.out.println(names[0][2] + names[1][1]);
    }
}*/


class MultiDimArrayDemo {
	public static void main (String[] args) {
		String[][] names = {
				{"mr", "smith", "ms"},
				{"smith", "jones"}
		};
		
		System.out.println(names[0][1]);
	}
	
}

From: http://sitestree.com/?p=10873
Categories:SCJP
Tags:
Post Data:2017-07-19 18:16:02

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