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在 Java 中,设置边界值通常是为了确保数据在某个范围内
- 使用
Math.min()
和Math.max()
方法:
public class BoundaryValueExample { public static void main(String[] args) { int value = 10; int lowerBound = 5; int upperBound = 8; int boundedValue = Math.min(Math.max(value, lowerBound), upperBound); System.out.println("Bounded value: " + boundedValue); } }
- 使用条件语句(如 if-else):
public class BoundaryValueExample { public static void main(String[] args) { int value = 10; int lowerBound = 5; int upperBound = 8; int boundedValue; if (value< lowerBound) { boundedValue = lowerBound; } else if (value > upperBound) { boundedValue = upperBound; } else { boundedValue = value; } System.out.println("Bounded value: " + boundedValue); } }
- 自定义方法:
public class BoundaryValueExample { public static void main(String[] args) { int value = 10; int lowerBound = 5; int upperBound = 8; int boundedValue = boundValue(value, lowerBound, upperBound); System.out.println("Bounded value: " + boundedValue); } private static int boundValue(int value, int lowerBound, int upperBound) { return Math.min(Math.max(value, lowerBound), upperBound); } }
这些示例都将确保 boundedValue
在 lowerBound
和 upperBound
之间。如果 value
小于 lowerBound
,则 boundedValue
将等于 lowerBound
;如果 value
大于 upperBound
,则 boundedValue
将等于 upperBound
;否则,boundedValue
将等于 value
。