Source of Assert.java

Structures and functions

public class Assert 

  1: //: com:bruceeckel:tools:debug:Assert.java
  2: // From 'Thinking in Java, 2nd ed.' by Bruce Eckel
  3: // www.BruceEckel.com. See copyright notice in CopyRight.txt.
  4: // Assertion tool for debugging.
  5: package com.bruceeckel.tools.debug;

  7: public class Assert {
  8:   private static void perr(String msg) {
  9:     System.err.println(msg);
 10:   }
 11:   public final static void is_true(boolean exp) {
 12:     if(!exp) perr("Assertion failed");
 13:   }
 14:   public final static void is_false(boolean exp){
 15:     if(exp) perr("Assertion failed");
 16:   }
 17:   public final static void 
 18:   is_true(boolean exp, String msg) {
 19:     if(!exp) perr("Assertion failed: " + msg);
 20:   }
 21:   public final static void 
 22:   is_false(boolean exp, String msg) {
 23:     if(exp) perr("Assertion failed: " + msg);
 24:   }
 25: } ///:~