A newly created class's default assertion status is false (disabled).
The assertion status of a class can be changed at any time by invoking following method in class ClassLoader:
Above method has no effect if the named class has already been initialized.
package com.logicbig.example;
public class TestClass {
}
package com.logicbig.example;
public class MainClass {
public static void main(String[] args) {
System.out.println("Default Assertion status of TestClass: " +
TestClass.class.desiredAssertionStatus());
MainClass.class
.getClassLoader()
.setClassAssertionStatus("com.logicbig.example.TestClass", true);
TestClass b = new TestClass();
System.out.println("Assertion status of TestClass: " + TestClass.class.desiredAssertionStatus());
}
}
Output
Default Assertion status of TestClass: false
Assertion status of TestClass: true
package com.logicbig.example;
public class TestClass {
void doSomething() {
assert false;
}
}
package com.logicbig.example;
public class MainClass {
public static void main(String[] args) {
MainClass.class
.getClassLoader()
.setClassAssertionStatus("com.logicbig.example.TestClass", true);
TestClass b = new TestClass();
b.doSomething();
}
}
Output
Caused by: java.lang.AssertionError
at com.logicbig.example.TestClass.doSomething(TestClass.java:9)
at com.logicbig.example.MainClass.main(MainClass.java:13)
... 6 more
