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Java Arrays By Srinivas Reddy.S www.java9s.com
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Arrays Collection of similar data types Stages Declaration Construction Initialization www.java9s.com
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Declaration Declaring Arrays: int[] marks; byte[] age; Less readable: int marks[]; byte age[]; www.java9s.com
![Declaration Declaring Arrays: int[] marks; byte[] age; Less readable: int marks[]; byte age[];](http://images.slideplayer.com./18/6104437/slides/slide_3.jpg "Declaration Declaring Arrays: int[] marks; byte[] age; Less readable: int marks[]; byte age[];")
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Construction int[] marks; marks = new int[5]; “The size of the array is mandatory” In single line: int[] marks = new int[5]; marks www.java9s.com
![Construction int[] marks; marks = new int[5]; The size of the array is mandatory In single line: int[] marks = new int[5]; marks](http://images.slideplayer.com./18/6104437/slides/slide_4.jpg "Construction int[] marks; marks = new int[5]; The size of the array is mandatory In single line: int[] marks = new int[5]; marks")
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Initialization Initialization is loading the array with the values. int[] marks = new int[5]; marks[0] =20; marks[1]=49; marks[2] =30; marks[3] = 67; marks[4] = 35; 01243 2049306735 www.java9s.com
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Initialization – Objects class Pen{ } Pen[] pens = new Pen[3]; pens[0] = new Pen(); Pens[1] = new Pen(); Pens[2] = new Pen(); 012 www.java9s.com
![Initialization – Objects class Pen{ } Pen[] pens = new Pen[3]; pens[0] = new Pen(); Pens[1] = new Pen(); Pens[2] = new Pen(); 012](http://images.slideplayer.com./18/6104437/slides/slide_6.jpg "Initialization – Objects class Pen{ } Pen[] pens = new Pen[3]; pens[0] = new Pen(); Pens[1] = new Pen(); Pens[2] = new Pen(); 012")
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Array Initializer. int[] marks ={20,39,40,30}; Array Initializer www.java9s.com
![Array Initializer. int[] marks ={20,39,40,30}; Array Initializer](http://images.slideplayer.com./18/6104437/slides/slide_7.jpg "Array Initializer. int[] marks ={20,39,40,30}; Array Initializer")
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Two dimensional Array int[][] marks = new int[2][3]; marks[0][0] = 30; marks[0][1]=31; marks[0][2]=32; marks[1][0]=40; marks[1][1]=41; marks[1][2]=42; 0 1 0 1 0 122 30 314041 32 42 www.java9s.com
![Two dimensional Array int[][] marks = new int[2][3]; marks[0][0] = 30; marks[0][1]=31; marks[0][2]=32; marks[1][0]=40; marks[1][1]=41; marks[1][2]=42;](http://images.slideplayer.com./18/6104437/slides/slide_8.jpg "Two dimensional Array int[][] marks = new int[2][3]; marks[0][0] = 30; marks[0][1]=31; marks[0][2]=32; marks[1][0]=40; marks[1][1]=41; marks[1][2]=42;")
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Two dimension- non uniform int[][] marks = new int[2]; marks[0] = new int[3]; marks[1] = new int[4]; 0 1 0 12 0123 www.java9s.com
![Two dimension- non uniform int[][] marks = new int[2]; marks[0] = new int[3]; marks[1] = new int[4];](http://images.slideplayer.com./18/6104437/slides/slide_9.jpg "Two dimension- non uniform int[][] marks = new int[2]; marks[0] = new int[3]; marks[1] = new int[4];")
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Multidimensional Arrays int[][][] marks = new int[2][3][2]; 0 1 0 12 0 12 01 010101 0101
![Multidimensional Arrays int[][][] marks = new int[2][3][2];](http://images.slideplayer.com./18/6104437/slides/slide_10.jpg "Multidimensional Arrays int[][][] marks = new int[2][3][2];")
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