Java Boolean compareTo()用法及代码示例

布尔类的compareTo()方法是Java中的一种内置方法，用于将给定的布尔实例与当前实例进行比较。

用法:

BooleanObject.compareTo(Boolean a)

参数：它采用布尔值a作为要与当前实例进行比较的参数。

返回类型：函数的返回类型为int。它返回：

如果“ a”等于“ b”，则为0，
如果“ a”为假而“ b”为真，则为负值，
如果“ a”为真而“ b”为假，则为正值。

下面是说明布尔类的compareTo()方法的程序：

示例1:

// Java code to implement 
// compareTo() method of Boolean class 
  
class GeeksforGeeks { 
  
    // Driver method 
    public static void main(String[] args) 
    { 
  
        // Boolean object 
        Boolean a = new Boolean(true); 
  
        // Boolean object 
        Boolean b = new Boolean(true); 
  
        // compare method 
        System.out.println(a + " comparing with " + b 
                           + " = " + a.compareTo(b)); 
    } 
}

输出：

true comparing with true = 0

示例2:

// Java code to implement 
// compareTo() method of Java class 
  
class GeeksforGeeks { 
  
    // Driver method 
    public static void main(String[] args) 
    { 
  
        // Boolean object 
        Boolean a = new Boolean(true); 
  
        // Boolean object 
        Boolean b = new Boolean(false); 
  
        // compare method 
        System.out.println(a + " comparing with " + b 
                           + " = " + a.compareTo(b)); 
    } 
}

输出：

true comparing with false = 1

示例3:

// Java code to implement 
// compareTo() method of Java class 
  
class GeeksforGeeks { 
  
    // Driver method 
    public static void main(String[] args) 
    { 
  
        // Boolean object 
        Boolean a = new Boolean(false); 
  
        // Boolean object 
        Boolean b = new Boolean(true); 
  
        // compare method 
        System.out.println(a + " comparing with " + b 
                           + " = " + a.compareTo(b)); 
    } 
}

输出：

false comparing with true = -1

相关用法

注：本文由纯净天空筛选整理自kundankumarjha大神的英文原创作品 Boolean compareTo() method in Java with examples。非经特殊声明，原始代码版权归原作者所有，本译文未经允许或授权，请勿转载或复制。