|
| 1 | +//Important the computer class |
| 2 | + |
| 3 | +import com.builder.Computer; |
| 4 | + |
| 5 | + |
| 6 | +public class Computer{ |
| 7 | + |
| 8 | + //required params. |
| 9 | + private String ram; |
| 10 | + |
| 11 | + private String hdd; |
| 12 | + |
| 13 | +//optionals params |
| 14 | +private boolean isGraphicsCardEnable; |
| 15 | +private boolean isBluetoothEnabled; |
| 16 | + |
| 17 | +public String getRam(){ |
| 18 | + return this.ram; |
| 19 | +} |
| 20 | + |
| 21 | +public String getHdd(){ |
| 22 | + return this.hdd; |
| 23 | +} |
| 24 | + |
| 25 | + |
| 26 | +public boolean isGraphicsCardEnable(){ |
| 27 | + return isGraphicsCardEnable; |
| 28 | +} |
| 29 | + |
| 30 | +public boolean isBluetoothEnabled(){ |
| 31 | + return isBluetoothEnabled; |
| 32 | +} |
| 33 | + |
| 34 | +// Note the private visibility of the constructor, and the builder variable type. |
| 35 | + |
| 36 | +private Computer(ComputerBuilder builder){ |
| 37 | + |
| 38 | + this.ram = com.builder; |
| 39 | + this.hdd = com.builder; |
| 40 | + |
| 41 | + this.isGraphicsCardEnable = com.isGraphicsCardEnable; |
| 42 | + this.isBluetoothEnabled = com.isBluetoothEnabled; |
| 43 | +} |
| 44 | + |
| 45 | + |
| 46 | +//the builder inner class |
| 47 | + |
| 48 | +public static class ComputerBuilder{ |
| 49 | + //required params. |
| 50 | + private String ram; |
| 51 | + |
| 52 | + private String hdd; |
| 53 | + |
| 54 | +//optionals params |
| 55 | +private boolean isGraphicsCardEnable; |
| 56 | +private boolean isBluetoothEnabled; |
| 57 | + |
| 58 | + |
| 59 | +public ComputerBuilder(String hdd, String ram){ |
| 60 | + this.ram = ram; |
| 61 | + this.hdd = hdd; |
| 62 | +} |
| 63 | + |
| 64 | +public ComputerBuilder setGraphicsCardEnabled(boolean val){ |
| 65 | + this.isGraphicsCardEnable = val; |
| 66 | + return this; |
| 67 | +} |
| 68 | + |
| 69 | +public ComputerBuilder setBluetoothEnabled(boolean val){ |
| 70 | + this.isBluetoothEnabled = val; |
| 71 | + |
| 72 | + return this; |
| 73 | +} |
| 74 | + |
| 75 | + // The build function. |
| 76 | + public Computer build(){ |
| 77 | + return new Computer(this); |
| 78 | + } |
| 79 | +} |
| 80 | + |
| 81 | +} |
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